Recommended new speakers for under $500?


Hi all, I'm looking for a set of new speakers for backup/second system. Anyone have any suggestions? I was thinking about the Usher S-520. I have no preference whether the speakers are full range, monitor, or planar.
dracule1
NHT has a good choice under $500 and you can now buy direct from the factory, on line. They have a good return policy so you can decide for yourself after you hook them up to your rig. In home demo is the best way to buy.
At this price point and little extra going used has real benefits paradigm 20 gma europas sonus faber concertinos
Agree with all that has been posted here, and suggest adding EPOS ELS 8 Mini Monitor to your list.
Thanks for the suggestions guys. I'll check into them. I'm a sucker for small speakers that can throw a huge soundstage.
Second the reco for Paradigm Studio 20s. They are $800 a pair but slay rivals.