I got the EVODs in 1.8 (just to have a few for X2s and eGos), but the only heads available were 2.4 - all good - I like that on Spinners. Then went back and ordered a bunch more!
Tried a couple from the first batch and they were everything I've heard and then some. If you get some, order some needle-tip bottles too (unless you syringe-fill). They're not much fun to fill without them, and you'll have to fill pretty often, I think because they wick so well (and they're tiny - 1.6ml). The gap between the center tube and tank is pretty wide, but it's pretty deep in there. If you tilt, you won't be able to fill it all the way. And I heard HC's bottles are thicker (better quality) than FT's.
I really like these (and will end up with 17 of them

), but I think the edge still goes to carto tanks and Vision VTs for me, for performance. These are just cheaper and will probably end up being my every day stuff.