Thanks for all the input everyone. Only just got broadband back and have been reading through the comments. Looks like 5" speakers are working for some people so I might give them a whirl. So far I've got recommendations for:
JBL LSR305s
Yamaha NS5s
Yamaha NS7s (could possibly go this large)
Equator D5s
Any with a sub
I recently tested quite a few monitors in a local music store.
I have to say, that i have no experience with monitors so far, but tried to pay attention to what i read about different characteristics about monitors. (e.g. i listened to Neumanns and Genelcs from time to time, to have a comparison that i can use as a basis to judge the other monitors.)
Of course the cheaper monitors where not as good as the Neumanns, etc., but the Tannoy Reveal 502 really surprised me.
Originally i was looking at the Focal Alpha 50/65, but the Tannoys where not that much worse considering the difference in price.
I compared them (the Tannoys) to KRKs, the JBLs, some Yamahas, etc. and (at least to me) they were quite good.
Long story short: I'm not in the possition to give you a sophisticated statement about the sound quality, but i think you should also consider the Tannoys, if you are already looking for the JBLs, etc.