Hi, I'm looking to upgrade to a new amp soon and would like some help because I don't know that much in general about which amps give the best tones for different genres. I've played mostly metal and hard rock, so it should be good for that, but I'm also looking to branch out and try blues and some of the more classic stuff. My current gear is...

Ibanez S570DXQM
Line 6 POD HD
Line 6 FBV Express
Line 6 Spider III 15 watt

I don't need anything big because I just play at home, but I want something that will give good clean tones along with distortion. I don't really want a Line 6 but don't really know what else will work well with the POD. I've tried some Marshalls and Oranges at the store but again I don't know how well it will match up with my stuff. I also don't want to spend more than around $500 but any suggestions are welcome as I have time to save up. Any help here would be greatly appreciated. BTW I live in midwest USA if that matters. Thanks.