If/(when?) I get a Cub, I'll probably go for the M2 version. But then, I've already got a full-size Nimravus in ATS-34 that I've removed the BT2 from and it's awesome. (Although a little dull at the moment. My Sharpmaker 203 never seems to get it as sharp as I'd like...) I'm sure that you'll be pleased no matter what steel you get.
The only very minor beef is with the sheath. For one thing, part of it is carbon fiber printed nylon. I really would have like a full ceoncelex sheath at this price point. Also, I had to remove the annoying keeper strap since it was a royal P.I.T.A. to snap closed with the knife in there, and I like the "quick-draw" effect without it... Plus, you only get the one carry position with the factory sheath.
For a smaller blade like the Cub I'd probably want to get a custom IWB, inverted or horizontal concealex rig done for low-profile daily carry, but then I've never tried the factory Cub sheath on personally.
PM