What do I like??? Cheap stuff.
Seriously.... bullseye competition with my target .22 auto, it's Eley Match Ammo. Target shooting with my bull-barrel .22 rifle, it's CCI mini-mag or CCI Blazers. They each provide the best groups in their respective guns.
Plinking or casual target shooting, it's the Federal bulk-pack stuff from Wal-Mart. 550 rounds for 9 bucks. The accuracy is more than adequate, and it's as cheap as you'll find it. It's what I feed the 10/22, the Single Six, and the Standard Auto.