Don't switch systems if not forced to. It usually costs a lot and gains little. You have a camera which is part of a large, extensive system with all options one could think of. Yes, the OM2 is less bulky than your F100 (owned both) but neither is a camera to always have in your pocket, nor is a Bessa. I'd look for a nice compact to supplement your F100.
Also ended up also holding the leica M6 that I eye every time I walk into the store. Well, let's just say I've never used such a smooth film advance lever before in my life
The Nikon F3/F3HP has a pretty smooth film advance, too.
Jim MacKenzie - Regina, Saskatchewan, Canada
A bunch of Nikons; Feds, Zorkis and a Kiev; Pentax 67-II (inherited from my deceased father-in-law); Bronica SQ-A; and a nice Shen Hao 4x5 field camera with 3 decent lenses that needs to be taken outside more. Oh, and as of mid-2012, one of those bodies we don't talk about here.
This place is selling the OM4T w/50mm 1.8 for $199!!! Which I believe is a steal. I know it's not the 50 1.4, but the lens and body are in great condition. Plus the meter seemed to be working fine while I was handling it.