If you go 100 watts or more the mod will need 2 batteries. They will need to be "married" to each other for safety reasons. If you want back-up batts you'll need another "married" pair. It can become a hassle when the batts die and you do not have 2 more ready to go.
A 75 to 85 watt device will take only a single battery and carrying a spare or 2 around is less of a hassle.
If you go only rebuildable on the tank and have great difficulty in learning to build coils it may not be pretty.
For these reasons I'd suggest a mod under 100 watts and a tank with a rebuildable deck option.
So if rebuilding doesn't pan out in a timely fashion for you, you'll have pre-made coils to fall back on.
Of course if you simply must have 100 watts plus have at it, but know that that territory comes at a price (not talking cash here)
Likewise with RBA/RDA/RTA's
if it turns out you can't build you'll need a plan "B"
You have options, don't commit before you are as informed as much as possible. Cheers and good luck.
Hitmetwice,
Thanks boss, I've got some great insight already. Today is my first session in the Ecf. It is a hassle when the battery dies. I bought a tecc e-electron, simply because it was the cheapest one they had and I hadn't a smoke all day, so wasn't wasting time should I or shouldn't I! It has variable wattage control. Only the one battery and I'm hanging off my keyboard or the wall socket, haha! Nicotine cravings tend to defeat personality too, lol!
To be honest, I don't want to get into it, tooth and nail. Just more flava and more vapour ( and more power!! Grrrr...heh).
What I've understood about E-cigarettes so far is, because mine goes up from 5-10 w, we'll firstly it becomes hot very quickly and the taste becomes bitter. The other is I'm getting spit back through the mouth piece. So it's not going to be long I'll be able to keep using it. If I keep the wattage at around 7w on it and blow some air through the vents, I can enjoy a good vape?!?!... I have a spare coil so maybe that could work better.
Thanks for taking the time to put in some consideration for me.