If you do a search on "M50" I think you'll find a couple of discussions about them. Tonaly, they'll sound a bit different than you M22's. If you want to keep the same "sound" as the M22's but have more bass, and lose the stands, you'd need to jump to the M60ti's.

That's not to say the M50's sound bad, they just sound a bit different than the M22's and M60's.