YES, I know there is a monster thread out there regarding this amp. But I just have two questions and I'm too lazy to comb through all that stuff... 1) Axe-Fx VERSUS Axe-Fx Ultimate: In 20 words or less, what is the difference? Sub-question -- do you think the difference is worth the extra $$$? 2) If I had one of these, I would want a pedal board that would a) allow me to move between preset patches (similar to most modeling amps), b) allow access a silent tuner (I'm guessing the Axe-Fx has a tuner built in), and c) has a expression pedal for volume control. What type of Midi Pedal would do this and work well with the Axe-Fx?