Sunday is my birthday and it's time for a present that I actually want and absolutely don't need. Have never owned a GK and have been enjoying playing my OLD 200MB metal combo amp (not the new MB200)thorough a 2x12 cabinet with internal speaker turned off. I get this riding the rails thing. Have been using a 7-Pro and had a TH500; both have plenty of power for a 2x12 with my rock / funk band application. My SVT-CL and former Walkabout did not offer enough clean headroom. I do believe that having extra power that was unused never hurt and can sometimes help deepen the low end content. Do the MB500 / 800 series have the same characteristic as the old RB / MB series in that they sound different when pushed? Also, can I assume that the MB500 does offer a lot of womp compared to the above mentioned TH500?