Smok M50 Problems

Hey guys,
Just wanna drop in and say I ordered a Lemo2 to try my hand at rebuilding. It come with a coil and wick at .5ohm already in place. This thing really works awesome... tons of flavor and vapor and can even MtL hit if I dial down the air almost all the way. I do have two hopefully easy questions I'm sure someone knows the answer to...
How high of wattage can you push these or any handmade coil to? Also when you wick a new one, since it doesn't come with much info on it, how do you know if you're putting too much cotton in, and is there a trick to get the cotton right where it needs to be in that little wicking channel from the tank to where the coil is so the juice gets absorbed quickly and properly but without flooding it?
TIA and I know I'm know pro sub-ohmer by any means lol but for someone thinking about one this tank really works awesome.  

Got my new Arctic tank in....seems to be pretty good so far. Tons of flavor, but boy does the .2ohm coil go through the juice at 50w. When the coils become more readily available I think I'm gonna order the .5ohm coils.  

I'm having trouble with my Jem Pen E cig - hopefully someone can help me.

I take the coil out clean the tank and battery area, put it back in with liquid + prime the coil. for about 5 minutes it tastes fine and is vaping as normal. then a really horrible burnt taste comes in which is unbearable to smoke and making my throat hurt.

I take the coil out and clean again, put more liquid. the same thing happens! it tastes absolutely fine again and then gets burnt.
any idea why this is happening ? the device gets quite hot too...
i don't think the coil is the issue because why does it taste fine for a few mins?
I've ordered new coils so going to try that but worried its the device. i've only had it for 2 weeks and changed the coil about 5 days ago.  

I've yet to buy a VW mod but i will be soon. However the outcome of this thread will dictate which one i go for.
Ive been looking at a few:

MVP 3 Pro (60w mod)
Itaste 50w mod
Coolfire 4 40w mod
Kanger Subbox Mini

For arguments sake lets say you have a 0.5ohm stock coil in an Isub G tank on the Istick 50w. You also have a 2ohm stock coil for it.
The mod is capable of supplying 50w to both the 0.5 ohm coil and the 2ohm coil. 50w is 50w right? So what, if any, is the benefit of putting a sub ohm coil in the VW mod?
The manufacturers market them as sub ohm mods, but why go sub ohm if the device is capable of the same wattage on a 1+ohm coil, the experience would be the same?

Which leads me to a similar question. Would any VW mod from say 30w capable to 60w capable basically give the exact same experience for the majority of users assuming the same tank is fitted?

I'm quite new to this but i hope my question is understandable
Thanks  

So i had mvp 20w, and the kanger subtank worked fine with 1.2ohm occ at 11-12w.

Just put it on the mvp 3.0 and does not fire. Does not detect ohm ( blinks like this "-.-")

what gives? I tried with kanger pro tank 1.8ohm coil and it works great.  

So I dropped by brand new MVP. I had the Eleaf Melo tank installed when it hit the ground. Didn't see how it landed or anything. But when I picked it up and tried to vape the resistance reads "-.-". The device seemed to be fine, so I thought maybe the coil or tank fell out of wack and tried it on my iStick 50w. It worked fine!

So obviously it must be the MVP then?? I installed another Melo that I bought and it works fine on the MVP. But after disassembling the older Melo (that was originally on the MVP) and putting back together it still will not fire on the MVP, just the iStick. I tried playing with the center pin on the Melo but have had no luck.

So what the heck is going on?  

Hello vapers! first! I'm a noob at this stuff because I just buy my tank and use it with the coils it comes with and second, my english isnt that good but I can understand it perfectly fine.

Anyway, Ive been searching everywhere but I couldnt find a solid answer to my question.
Im using an Aerotank Giant right now with a 1.8 ohm coil, if I put a 1.2 ohm I would have to use less voltage because I get a burnt taste and the coil burns pretty quick, Im about to order a Sub ohm tank soon and I'll use the stock coils, the one im getting is the Kangertech SubOhm tank.
Why do subohm coils use more voltage when normal coils use less?

I mean, Ive seen people do things like 0.2 ohm coil @ 100W + If I did anything over 3.5V on my 1.2 ohm coil itd burn instantly... SubOhm takes more voltage the lower you go and normal dual coils take less voltage the lower you go!

1.9 Ohm Dual coil = 3.7-3.8V for me
0.5 ohm OOC subtank sub ohm coil = 12-30W?!

Thanks in advance for taking the time to reply to this post and your patience!

Cheers!

Edit: by the way, Im planning to use my subtank with a 50/50 PG/VG 16mg nicotine, Is that ok?  

My fetch pro stop working. Hubbys stop first i can charge his and its fine take it off the charger and nothing. Then today my screen went dim i can't even get a hit from it. Question what is the best device out there. He had a smok wocket after 2 months his stop charging and my wocket still works fine. Need a better brand then smok any good suggestion. HELP  

I was building my Avocado RTA today and for my second coil, I noticed that I must’ve wrapped it backwards as the upper leg went in the lower slot (the other coil had the top leg going in the top slot and bottom in the bottom). The tank reads on the ohm meter just fine. I am just wondering if I should re-wrap the coil so that the legs line up with the slots or if it’s fine as is? I hope this question makes sense. Thanks in advance!  

So I just received a 100w seigei box mod and I fully charged my 2 18650 batterys that worked fine in my mech mod. When I put them both in my sigelei the battery percentage only tops out at around 50% charged?!!! Like what they are for sure both fully charged. Anyone know what the problem is?