For just messing around plinking - Federal Bulk Pack
More "serious" plinking / shooting games - CCI Blazer
Most serious plinking / accuracy shooting - CCI Minimags (Good for critters), CCI SV, CCI Sub-sonic
The CCI Standard Velocity perform excellently in my 10/22 TD, but they are hard to find. CCI Minimags are probably the best all around for price/availability/accuracy
I have a bunch of CCI Stingers that I want to love, because they seem like they hit hard, but their accuracy seems to be all over the place, like 5"+ groups at 50yards. It also feels like there are powder inconsistencies in them sometimes.
Federal Champion 40gr LRN shoot well in my rifle too, but at about the same price, the CCI Blazers outperform them. Have had nothing but poor results with any Winchester ammo I've tried especially the Xpert HV bulk pack, which is probably the most horrible 22lr ammo I've ever tried in any rifle.