I think the performance of the Xray shocks is good, but I hate building them, there such a pain to get right and they need rebuilding every other week to keep them in good condition and I think that’s the reason why everyone hates them.
Xray don't want to change them cos there team drivers say they are fine, but then again team drivers (and pit men) have more time to build them and get them right than the average guy.
Xray make quality products and rarely get many complaints about there products but almost everyone has a moan about shock maintenance so only time will tell if they listen and re-design them.