I've got the MOE, CTR, Modstock, and EMOD, the tightest fitting one is my CTR with its friction lock.
If you like the cheek weld of the MOE you might like the CTR better, for a better cheek weld with a friction lock and storage then look at the ACS.
The Modstock don't have a friction lock and the fit would vary with different buffer tube manufacturers, my best fitting buffer tube with stocks without a friction lock is my BCM tube, YMMV.