Ampeg SVT-3 SWR SM-500 Trace Elliot AH-500 These three heads are available in a store close to where I live. Of course I will test them before buying, but I want some opinions here. I play basic rock, and punk rock, I like punch tones, but I want o good low frequencies response also. I own two Trace Elliot cabinets 1153 (1x15") and 2103H (2x10" with horn), both are 8ohms. Thanks.