Buy whatever you want. I think you'll find you can never have to many 22 rifles on hand. I have (er my wife has) the pink tiger stripe camo 15-22, and I have an old Remington 514 along with a Norinco ATD (which is a browning SA22 knock off) and I have the dedicated .22lr upper for my AR. It's good to have a few redundancies in your plan.
A good plan executed today is better than a perfect plan executed at some indefinite point in the future.
- General George Patton Jr