I went with the x5. The max wasn’t out yet. If I were to buy another CO gun, it would be the max. GG kit is nice and light. However, I picked up an sig package from a buddy and he had a mix of GG parts and some parts from Sussex gunworks. It’s a tad bit heavier by about a pound and change but the wall feels better. Granted, this is personal preference and in dry fire. DPP worked great for me but the package included a SRO which I plan on trying. I do have a Odin armory man-o-war thumb rest and love it. Big step up.
All in all, I’m happy I went with a x5 and have no regrets.