the compensated models look cool, IMHO I'm not seeing much reduction in actual recoil - I had a USP compact that was compensated and it didn't change a damn thing...
Another problem is that those ports create one hell of a flash at nighttime - if you're using it for home defense it may not be such a good thing to have - you'll blind yourself.
Lastly, look up "glock kaboom" on google - there's a few 1st hand reports showing some strange stuff.
With all that said, I have a G27 with A+G extensions to run hi cap G23 clips, and glockmeister magsprings. Runs like a bastard that gun
Lastly, if you're budget is in that range, try a Ruger P345 - that's a nice, nice shooter. Polymer and has actual safeties on it. .45 however...
rjp