After testing a lot of different ammo in 9 different 22's, I settled on Federal bulk. I have a soft spot for Remington, as it shoots well in my rifles, but the Federal stuff beat it hands down. Winchester power-Points are very accurate in some 22's, but the X-pert stuff won't feed in anything I own. Took me about two years to finish a brick of those. I'm planning on trying some of the Wolf ammo if I can find it locally, I'm still looking.
Papajohn the Particular Plinkinator