M2s are really nice in some ways but very frustrating in others.
If you just use the thing as a keyboard and never worry about "messing around" with it you might never even know.
The keys are different (standard M/F stems will fit and operate) with different profiles, etc. Stabilizers are plastic, not wires, and they are not nearly as easy to disassemble.
If I were not so spoiled with the F, an M2 might be more appealing to me. The configuration and form factor is very nice and compact.