Our B+M has pretty much all the RTAs. I've vaped on most of them. I've seen all the decks and how the tanks are constructed. I'm sure the mutation will be okay for you. I have my own order of preferences:
1) bellus
2) aromamizer
3) zephurus
4) goblin mini
Now I know that is a short list considering the Chtuhlu, Lemo, Billow 2, Mutation x, and all the rebuildable RBAs as well. I've owned or still have five of the tanks I mentioned. The only one I use daily now is the bellus. When I'm not using the bellus I use a crown, a kanger mini w/ nickel coil or my mini TFV4. All of those have temp control coils. I also use mech mods and RDAs. You asked for opinions. I like all the tanks but all have pros and cons.
I like the bellus because I can build it to vape at 35 watts, put it on a DNA200 or dual 18650 and not need a recharge for a good nine hours. Now I'm not chain vaping at work of course. I do when I wake up and I do right after work though. All the tanks in my top four can be vaped between 35-40 watts and produce flavor and cloud.
Now I;'m a hobbyist. I have quite a few mods and a slew of atomizers. My preferences change every two weeks or so - I know. I'm fickle and fussy. I'm trying to cut down on my gear - but it is not working well, lol. I'm sure you will enjoy the mutation.