New shock dhx2 vs cane creek DB vs float x2

[james1]

Hey looking at replacing my dhx 4.0 on my nukeproof scalp and was looking at 3 shocks cane creek double barrel coil, dhx2 coil or float x2 air. Don't know if anyone has experience with these as the 2 fox are fairly new. And not sure how air would go also.
And is it a noticeable difference over my old shock would you say.
Thanks

James