Hi all. I'm been lurking on this site for years trying to absorb as much of the knowledge I can and I finally have a question...actually more in need of opinions. I have a Aguilar DB212 arriving today (great deal on Amazon) and now I need a head to go with it. I've set myself a $500 limit and would prefer something new and light. I currently play a Jazz in a small blues based band that tries to keep the volume down. Believe it or not I keep having to tell the guitarist to turn it up. We are auditioning for a second guitar and found that with two of them my current amp is having trouble keeping up. Choices I've been looking at: 1. Aguilar TH350 2. Ampeg PF500 3. Carvin BX500 4. GK700RB (most likley used) The only one I've been able to try is the PF500 in my local GC. Damn thing would cut out and go into some fault mode as soon as I turned gain or volume past 9 o'clock. Not a good first impression. Any thoughts on any of these?