Check out the 1/2A forum.

The HS55,HS56,HS81 are pretty much the default servos for most of the planes we build over there. Here's a couple of planes with the HS55's. Also I'm not a big fan of the single conversion Park flyer recievers. They are highly prone to interference. A duel conversion or the single conversion DSP types like the Berg recivers are better choices.

Darren