I am guessing that Anschutz 54 sporters, kimbers from OR and Coopers all have about the same potential to shoot well. CZ's as well but require some tweaking. I have a 452 in 17hmr that outshot the two Anshutz 17hmr's that I have owned. One of these was a 1717hb. I had a 455 22lr that shot well but not quite with my Annie's. Was tempted to put a Lilja 22mag barrel on that gun but ultimately traded it. My Anshutz 22's unfortunately require expensive ammo to really shine.
I have pretty much decided that you either got the 54, or you don't.
And the CZ is definitely the most bang for the buck in the do-not department. The Americans may end up being the best bargain out there, but right now there just isn't enough after market stuff IMO.
Travis