I actually have 3 7rm. One 1:8.5 24" one 1:9 26" and my wife's 1:9.5 24". I love the 7mm. Thought about 7-300.I've engaged in a few conversations of late with your same question. Almost all the folks are thinking 7 Rem Mag. Its a good option to drop some bullet weight and a bit of recoil.
Since you have one of those, and if you don't want another, say in a fast twist rate, maybe its time to check out the short mags.