I'm still amp shopping and I've been hearing great things about the Mark III. My local music store has this in stock for 799.99 with footswitch. I was wondering if this is a great deal or not? It seems to be in good condition, but not sure about the tubes. I haven't tried it out yet, but they have posted it on their online website with picture. I play from clean rockabilly stuff to pretty much very high gain metal. Most importantly, I want the amp to do good with both. What's the wattage on these? What cabinets work well with it? Thanks!