Well that didn't take long... 16hrs and decision is made...
The 17HM2 does everything you need, without anything you don't. HM2 ammo, as Ridge mentioned, ain't easy to find, and won't get any easier in the future, since other than CZ, I'm not sure of anyone chambering rifles for the 17HM2 anymore - heck, I was surprised to hear CZ is!
IF you decide away from the HM2, then the Savage 93 in 17HMR would be my go-to choice, but frankly, any 22LR will do what you need (hence the 17HM2 being so suitable). I spent most of my fall so far shooting a 22LR Savage Mark II, plinking out to 300yrds. The CZ is a more accurate rifle, by a touch, but until they make stainless rifles, whenever I'm not competing and can sacrifice just a bit on precision, I favor the Savages.