I urge you to buy a 22. Get whatever fits your budget and buy lots of ammo. The more you shoot it the better off you will be. I would lean to the 10 inch Contender because of the caliber options available but I believe the others you mentioned would be fine too.
"Therefore go and make disciples of all nations,... "
Handgun hunter since 1979 - haven't used a rifle since!
HHI member #992, NRA, SCI.