GGb for around $150

+1 for the tm mk23.
I would say its the best preforming pistol you can buy.Ultra quiet with good range and power.
Plus if you really want to you can fit a g-spec 303 barrel, the fps hits about 420fps, but range is also improved a lot.

Only downside is the size with the silencer attached

For me the lack of blow back is a plus.
There is no noise and its super reliable,the two things I want most from any piece of kit I use.

If you want a blowback all the newer TM pistols are good,I loved my p226.