Well, I looked at the prices of accessories.... and that scared me. Just a film insert costs more than a complete DSLR here! So I was a bit worried about repairs etc. Ive decided to go Leica M + Linhoff Technika combo.
Thanks for all the help! Its a real shame Leica, Zeiss, Contax, Rollei, Voitlander, Linhoff, Schneider etc dont all get together to produce a new standard for backs and a lens mount like the Olympus 4/3 standard, except better quality! (say 30mm x 30mm).