I am not a collector, but I have accumulated a large number of 35mm cameras and lenses over the past twenty years. I actually have used and am using all cameras. I wouldn't know where to start ...
SLR Systems:
Nikon FE, FE2, F2, Nikkormat, FM
Canon T-90 (2), F1N (2), F1n
Rolleiflex SL35 (3), SL2000F Motor
Zeiss Contarex, Contaflex
and many many excellent lenses for the systems above ranging from 7.5mm to 500mm.
Rangefinder Systems:
Leica M3, CL, Standard,
Canon P, IVsb
with many lenses (from 25mm to 135mm).
Then I have the folding cameras in 35mm and medium format, plus a Linhof 4x5 camera plus medium format SLR and TLR cameras.
My wife is patient ... 🙂