I've been in a realationship with my Ashdown evo ii 350 for a few years but recently flirted with a Mark Bass TTE 500 which is at a great price (used 450) I think I want more headroom, but is a jump from 350 to 500w really going to help? I want to be prepared for growth in my rig. I currently use an eden 2x10 and a mesa 1x15. Also, what are people's thoughts in general in regards to Ashdown evo vs Mark Bass TTE. Thanks a bunch.