Have same issue with my Yamaha MoX6 when the MoXF6 came out. Ironically, aside from the improved "engine" it had sample features.
It's taken me a long time for my AR to break me in, and while sampling would be cool, I primarily use my AR to play one shot drum samples triggered by Yamaha e-kit.
I really have all I need, I just need to tame my little ego's pride that wants the latest and greatest of my chosen gear.
I still use and enjoy my Line 6 X3Live. It covers guitar, bass and vocal pre-amps, FX, etc... I have withstood the gear lust storms for that!
Finally, I still record with my trusty Roland VS880ex. I upgraded to a VS2000cd a few years ago, but I am deep into my 880ex songs at 48K, and unfortunately the VS2000cd only does 44K and less!