Depends on what you want to do with your shooter. I never buy bulk cheap .22 ammo unless it's for the kids to plink with. You don't need to buy match grade ammo, but I'll never know why people strive for accuracy and then buy cheap ammo. What you need to do is to try various ammos and see which runs best in your gun. One gun might like a different ammo than another gun.
Go to http://rimfirecentral.com for a real education on rimfires.
Thanks for the link.
I use Federal Classic .22 hollowpoints which sell in 550 round boxes at Walmart for $8.95. I can consistently shoot 1/4" five shot groups at 25 yards with it from a sandbag rest, and that compares well to anything I have tried in that particular rifle except the very expensive Eley match grade ammo. If you haven't tried it you should. It might save you some bucks on practice ammo that you could spend for quality match ammo for real accuracy work.