So I need your advice. I just had an offer to buy a used svt4-pro head. It's the old one (the red and blue face) but it's in great looking condition. I haven't heard it yet, and of course, will make no decisions until I do. It has lived it's life in a modified SKB case, that it comes with. So, if everything looks and sounds fine, how much would you say it's worth? Have there been many significant changes between the older version 4pro and the newer? Also, what do you think of it? What cabs does it work best with? I'm looking to get a clean Victor Wooten/Oteil Burbridge type sound, so I thought this was a good place to start. Any answers and advice would be greatly valued. Thanks!