I've got BL-22. Fun little rifle, my son loves it. Very well made, only complaint is the trigger sucks. Bought a trigger kit, but haven't fooled with it or found anybody else who wants to tear into it.
I have a BL22 grade 2. I love it!! It's the funnest rifle I own, I'm not a plinker type of guy but this one begs to be shot at stuff that'll react and is not alive. I've heard the triggers are terrible a lot before but this one is ok, not perfect but entirely ok.