I'm just about to buy a new Aguilar AG500 Dual Channel amp and I'm wondering if there are other comparable amps that I should check out before pulling the trigger. (By comparable I mean in terms of tone, power, weight and price). I was interested in the checking out the Thunderfunk TFB550 but I think it's out of production and was replaced by the TFB750, which is out of my league in terms of price. In trying out amps I found that I preferred the AG500 to the Genz Benz Shuttle 9.0, MarkBass Little Mark III, TC Electronic RH450 and the Acoustic Image Clarus 1 (which I own now and will be looking to sell). Is there anything else you'd recommend I try? Thanks!