Have not had experiance shooting the Aguila sub sonic ammo,but their HV stuff is OK.
Out of my suppressed 10/22,the best results for me have been with Winchester Subsonic.I beleave they use the same projectile as the HV Powerpoint.Zeroed at 30 mtrs my rifle will put 5 ronds into a 10 cent peice.I have found this round to be quite accurate and the bullet type VERY efficant at killing Opossums (the type of fury woodland creatures I hunt).Plucked Opossum fur fetch's $90.00 a kilo,but it must not have blood and gore on it.(18 ...25 'possums per kg).A good shooter can do 3kg's a nite ,easy. Head shots are a must and with this combo the 'possum can be head shot out to about 50 mtrs with ease.I have recovered projectiles that have entered the head and come to rest against the skin,mid way down the body,nicly expanded to 38 cal. Other brands just don't seem to have the accuracy or the ability to bring about a clean one shot kill.So what looks like a cheap deal will end up costing more in the long run.Have gone from 1.5 rnds per kill with Win Subsonic's to more than 3.5 with cheaper brands.If you are hunting with low vel .22 ammo , you need to stack the odds in your favour.Try the Wincester stuff,I doubt you'll be dissapointed.
btw, Oppossum's are about the size of a large cat, we have them in plauge proportions here and shooting them is a great way to subsidise our shooting activities.