Team xray, there is no comparison for quality of parts and how we'll the kit goes together, it's just so nice, everything has been thought about!
Add to that the hudy side of things with the excellent tools, set up station and the xray online set-up library.
XB4 is just an amazing bit of Engineering
I can't comment on the sworks as I've not had one myself...
But for me after trying other manufactures, I'm back and staying with Team xray!