I've spent some time behind a P226 X-Five Allround in 9mm... one of the best USPSA Production pistols available (my opinion). Fit and finish were second to none. I strongly considered getting one since I carry a P228 on duty (same controls). The X-Five Allround is a very heavy pistol, weighing in at a whole pound more than the P228. In the end, I went a completely different direction and just picked up a STI Eagle.
If you are talking about the new X-Series modular pistols, I don't think they are available for sale yet. I hate it when companies introduce a new model with the same name as the legacy model.