Regarding a couple of ammos mentioned here, based on my own experience, and I shoot .22s a lot...
I've used Aguila off and on, mostly off, for about fifteen years. It's primarily been standard velocity; I've had good results accuracy-wise and some not so good. At least ten years ago, I bought a quantity (may have been a case) and had more misfires with it than any .22 ammo I've ever used. Perhaps just a bad lot. I mentioned this to an Aguila rep at a SHOT Show and he offered no explanation that I can recall. The last batch of Aguila SV that I bought a few years ago shot well, but it was noticeably behind CCI SV and a number of other .22 ammos in accuracy. Lot-to-lot uniformity may not be Aguila's strongpoint, but for cheap ammo, it's better than some others.
CCI SV - I've been buying this stuff by the case for a long time. Not the most accurate in every gun, but generally pretty accurate in most rifles and handguns, enough so that I can simplify things by buying one ammo. It functions well in semi-auto handguns where many other ammos won't do this reliably. Accuracy is fairly consistent from batch-to-batch. I've had two misfires with CCI SV over the past twenty years and both of those were within the last couple of years, maybe from a case I purchased six or eight years ago.
Some claim recently manufactured CCI SV doesn't shoot as accurately as older stuff and some misfires have been reported. Those claims may be true, but I can't comment as I haven't fired any of the more recent stuff that I bought in the last three or so years when this ammo was between $200 and $250 per case of 5,000. It's been the best .22 ammo available for my purposes for a long time. I hope it has not become on of the lesser ammunitions.