You're using the 22 for rabbits and the 223 for foxes?
Well for the 22 I'm not sure at the moment, basically something that goes bang should work.
223, well CZ 527 is my choice, or a Remington of some description. My CZ cost me £410 (but that was before these price increases), and weighs sod all, but is accurate (1/2 to 3/4 MOA) and reliable. My Remington is a tad heavy for field work as it's an SPS Tactical, but it shoots 1/2MOA and isn't ammo fussy.
Bear in mind with 223 for fox work, that ideally you will want good optics for it, and they're likely to cost as much as the rifle