Depends what youre doing with it...
Plenty of people here will tell you that you dont need anything more than a 4X or 3X-9X for a 22...but if you go by that philosophy in its entirety, you dont glass of any kind...
That'd be fine for busting bunnies...i have a 3-9 on my 22 for just that...but i find 9 or even 12 power a little inadequate for shooting any kind of targets at decent range (beyond say 100), & also not enough to see proper detail in paper as Blade says...
I recently tested some ammo in my 22 out to 150 yds, all to get a reference as to points of impact on a bullet drop reticle on 3-9, & found even the 9 power a PITA as i couldnt see the holes in target much beyond maybe 50-60yds...
I prefer more power for longer range targets, but the choice youve presented will be great for bunny's & general range plinking or shooting reactive targets i rekon...
The man who knows everything, doesnt really know everything...he's just stopped learning...