An F2 is a good choice for a camera that can probably be kept going forever. Look for a plain-prism model, although there is nothing that keeps a kaput metering prism from being used for viewing. There are several services that specialize in overhaul/repair of F2's http://www.soverf2repair.webs.com/
F2s in pristine shape go for quite a premium and will likely blow your Eu300 budget.
Problem is, Wong's "standard" service alone would eat up over 1/2 the OP's budget.