Yes, indeed, it' s called the Leica I.S. (Image Stabilizer)Do they have some kind of freezing ray that comes out of them to stop people from moving while this 1/8 sec exposure is going on?
R.F. : No mirror and a M7 shutter is so quiet that in practical use it's possible.
A Bessa 2R w/35mm 1.2 can be a good alternative but in (long term) quality you are talking about a different camera. (And of course a different price).
About the films: If you have to work on 35 mm film, the differences are a matter of a personal opinion. Both Tmax 3200 and Delta 3200 can give you the desired results.