Are your current amps and other gear the best you've ever had?

Yes.  Every generation of electronics and speakers improve over earlier equipment.  If manufacturers don't improve, they are not competitive, so why are they in business?  

I'm 99% sure I found my forever system...but I'm going to keep reading this thread "just in case"...lol

There's some past gear I miss, but, yeah, my system's far better than anything previous.  I don't see evolving further - it would be hard to imagine a greater degree of involvement and enjoyment than I'm currently enjoying.

Of course!  if it weren't, I'd get something else.  

The best I ever heard was north of $350K.  So not even close, but it's good enough for my ears and budget.