Limited experience with wire but I have tried a few so here goes.
Damn Killer: tried their spooled alien Clapton wire and had two issues. 1) it's NOT true alien wire. It's a .3x.8 flat ribbon wrapped with 32GA. Just a flat Clapton really. 2) the flavor was absolute shit. The only thing I liked about the wire was that it was easy to wrap and held its shape well, that's it.
CoilArt: have only tried their version of pre-wrapped alien coils. My only issue was that they were not alien coils. Same as the DK wire (.3x.8 32GA). However, the flavor was really nice with those coils and the resistance was spot on. Definitely enjoyed them.
UD: tried their uber cheap pre-wrapped Clapton's (26GA X 32GA, I think) and they are surprisingly decent for what I use them for. I use these cheapies in the rta I have set up for juice with nicotine and they do me right. Because I use them in an OBS nano tank I unwrap the coils ( legs are backasswards for that Atty) and re-wrap around a 3mm bit for six wraps @ .8 ohms. Taste is actually kinda nice.
Advanced Vape Supply: about two weeks ago I purchased a 30ft spool of their 30GAx4/40GA wire and cannot say enough good things about it. Resistance is spot on, ramps quick ( even on a 4mm with 6 wraps ), works great in TC/Power/CCW modes and the flavor is awesome! I think the spool was about $23 USD for 30ft, IIRC. Lol, that's less than .40¢ per coil I build and being SS and the fact I'm not a moron ( I think, maybe, I dunno), those coils I made will last me for a while. Not sure when I'll need to buy wire again, lol. I like their SS enough to stick with buying from them for the foreseeable future whether it be pre-made wire or purchasing different gages to make my own multi-core wire.
Anyway, that's the limited experience I have to offer for now. Hope it helps, somebody, anybody? Eh, I digress and don't know why. Really do enjoy building though and don't ever want to see another tank with a pre-installed coil again. Building is definitely for me.