Need Advice...

[pfschim]

if you like the Ampeg sound, consider the PF500 and a PF115HE cab.

It's also been said, but I'll repeat it; look into some of the "super 12" design cabs (fEarful, Baer, Thunderchild etc.) They are full range designs that will blow many multi driver (2x15 or 2x 2x10) rigs away. They do need some significant power to fully deliver the goods, but with solid power amps being pretty cheap (per watt) and the multitude of great pre's on the market, you should be able to put together a loud and light rig that will improve upon the Ampeg 450 you have today.

good luck

 

[mbelue]

I drive a Scion xB, so I could haul a freaking 8x10 if I traveled alone, but my band often combines gear in my car to go to gigs.

This breaks my first rule: My gear has top priority in MY car. There is nothing wrong with helping out, but sounds like you are the one having to sacrifice. There is a world of cabs between a 2x10 and an 8x10. We all hear tone goals differently. So which cab needs to be hands on. 2x12s can be alot louder than 2x10s. A 115 can be enough alone. Its all size shape and tone. Nobody knows those three better than you. Still I believe your car should be for your gear

 

[dukeorock]

There may be a 210 that'll cut it, but I've never heard it

Some awesome sounding small, lightweight amps out there these days.

Genz Streamliner 900
Genz ShuttleMax
Ampeg SVT7Pro
Aggie Tone Hammer
GK makes some cool small heads
Markbass