Comparable System

The Thunder 564  4-channel amp is the closest current MTX amp to your amp.  Crutchfield has your same head unit on sale for $249.99.  If you were pleased with the Jensen amp, just get another one of the same model; also a good subwoofer amp, especially in terms of watts per dollar, is the Profile CA600m.

Was the sub one of the new warren G series subs?  I've never heard them but they certainly don't look too shabby from the specs; plus they're DVC.  There's really a ton of different good subs out there and I don't even know where to start since I don't know what your sub sounded like.

I personally don't like JVC head units but if you were pleased with the way yours sounded before then there's nothing wrong with getting that same one again.  If I were you though I'd look at an alpine, pioneer, kenwood, or  sony unit.

Oh and you probably already have thought of this, but umm...you might want to consider getting an alarm to protect your vehicle and all of its goodies from now on

well accentshow, you should have listened to the guy with the Kicker idea.  I don't know who would steal a jvc 10, it's not worth the risk, but anyway, if you go with some kicker L5s or L7s and you get a good box, you will get great sq and spl.

I would recommend a mono amp for any sub (prefferably not MA but their subs are ok)  have you thought about a 12" or 15" L7 and an mtx 81000d,  that's what one of my friends is trying to get now.