No real suggestions for an actual model - as I said I've never played with low-end film kit before. I wouldn't reccomend an FD camera. You might have access to some interesting primes, but they'll only be a bit cheaper than the EOS version and there's no way to mount them without splashing out/DIYing on an expensive/tricky mount conversion (you need to trim 2mm off each lens to get infinity focus) or with an adaptor with glass in it - never a great solution. I converted a 58mm f1.2 before from MD to A mount - sold it very quickly afterwards!
Personally I'd go for an EOS just so you can keep on using your lenses. I did a Dynax 7d/7 combo for a while and it was fun - your 85mm for example would be a 136mm f2.6 or 85mm f1.8 (in DoF terms) depending on which body you mounted it on.
If you really don't care about this then I'd go for an MF simply because it'll give you such a different look. Be a bitch to process though - are you going to do it yourself? Pro shops won't give much change from a tenner for develop only MF film. Most of the flatbed scanners will do MF, but you'll need a very expensive dedicated film scanner if you want maximum quality - with a 40quid budget for the camera itself I guess this won't be a problem though. You won't get that particular Bronica on-budget, but hunt around and you'll get something.
Otherwise... Probably an old-school Pentax, simply because you can get so much on the M42 mount.
What do you want this for? Enjoy