I've had IIIfs in the past, and have still have a 70 year old Leica LTM camera. They are fun to use... but, if the only reason you have to get a Leica LTM is that 'you can't afford an M', I would seriously look at a Canon P. It has the common LTM lens mount, nice big and bright finder, handles like an M, quality made, few problems (even a wrinkled foil shutter curtain still works fine), a beautiful classic camera and you can find one for a few hundred dollars.