I already have a walkabout head right now. I'm going to get 2 of the Ampeg 210av cabs(I need a portable rig as an alternative to my 2 Ampeg 115E cabs). Do I really 'need' to get the Micro VR head? I know 'need' is subjective but I'm curious as to what really makes the micro VR/210av combo so magical, is the head pulling more weight in regards to the 'compact svt sound'? Or is it more the 210av cabs? So what I'm really getting at is can I come 'close' or even better to the svt sound with the Walkabout while benefitting from an extra 100 watts(as compared to the micro VR head)? Or do I need to micro VR head to really make the cabs shine.