For light, cheap and compact, don't throw out the Minolta X-700 or X-570(X-500 in some markets).
For possible the best feeling manual focus camera, consider a Minolta XD-11(XD or XD-7 in some markets). It's older and heavier, but what a lovely shutter and feel to the body. The MD lenses are wonderful and CHEAP these days!
The only reason I don't use a pair of XD-11 cameras any more is because I use the Minolta Maxxum 9...and well, it's a Maxxum 9. Hard to beat.
Jed