South of the border it does seem to be doing well, not the splash that the HMR made just a slow steady increase. Some of the folks on RFC are reporting that M2 is showing up at wally world and if that is not main stream than nothing is.
If I read correctly you have already got a 10/22 so a 17 is in order. Which one depends on context. If it is small edible stuff then the M2 because it is less destructive if it is just vermin than go HMR more range and more destructive.
I am still on the fence about the m2 for me when I go for gophers I usually hauling a 22 the hmr and a 204. Last year all I had was a bolt 22 and it pretty much stayed in the truck untill the hmr ammo had run out. This year I will be adding a 10/22t (which is comming home this week) just because it is just too expensive to feed the HMR and the bolt 22 looses out the the HMr or a semi 22 in the fun factor,that and 200 rounds is a slow day, good ones are 500 - 1000 ( our record is 4000+ between 2 singles 1 bolt repeater and a semi). Had Russells had the marlin 17m2 semi I would have been very tempted, a little cheaper to handel high volume days, the semi fun factor, good accuracy, but not leaving too much of a gap before it is fun with the centerfire.
