I loved my HP22 and it was completely reliable until it cracked the frame at about 3k rounds. The company recommends that you use only standard velocity ammo in it but it doesn't matter much, (I only used Rem standard vel.) you're unlikely to get more than 3k rounds through it without some sort of part failure. If you get one make sure to get a brand new one with warranty, that company will always make it right as I've found out from experience but a bunch of guys over at the Bryco-Jimenez forums have had the problem with the frame cracking in the same spot. If you shoot it alot it won't last but mine always worked well up until it gave out.
The finish isn't great and will show alot of wear if you carry it alot, the safeties aren't too bad after you learn them, disassembly is difficult at first but once you get it down you can take it down and put it back together in 20 seconds. It was a decent gun for $170 including an extra mag and both barrels, they're a bit higher now though I think. The barrel changes very quickly and can be ordered from Phoenix for $20 if you don't get the kit.
I know next to nothing about the PT22 other than the trigger isn't good on them, I believe that they're also a zamak gun so they are likely to have a limited life like the HP22.
The finish isn't great and will show alot of wear if you carry it alot, the safeties aren't too bad after you learn them, disassembly is difficult at first but once you get it down you can take it down and put it back together in 20 seconds. It was a decent gun for $170 including an extra mag and both barrels, they're a bit higher now though I think. The barrel changes very quickly and can be ordered from Phoenix for $20 if you don't get the kit.
I know next to nothing about the PT22 other than the trigger isn't good on them, I believe that they're also a zamak gun so they are likely to have a limited life like the HP22.