AS far as the .22 goes, there is nothing special about CCI blazer. I liked it a while back, but after ATK (federal) bought them out it changed and isn't any different than any other fed plinking load.
BEst bet is to buy a 2-3 boxes of each ammo you can find and see how it functions and groups, and if you find one that does better than others buy a bunch of it. You might want to go so far as make note of lot numbers and buy from that lot if possible. Between brands give the gun a cleaning as well. There is some speculation that differing lubes between brands may be incompatible, but the stuff builds up and testing a new brand with a dirty gun won't necessarily give you the best results.
www.markii.org and
www.rimfirecentral.com are some other places you might want to hit. both have ammo forums with more info than I can ever recall.