I read through the GK Amp super thread, and it's a lot to take in. Can anyone provide their comments specifically regarding the Gallien Krueger MB150E-112 ($800) vs MB115 ($400) vs 400RB/112 ($200)? I know the MB150E is the best, but does it really justify being twice the price of the MB115 but with a smaller sized speaker? Since I'm just a hobbyist, I also found a used 400RB/112 online for half the price of the MB115 and from that perspective it's hard to justify even getting the MB115, let alone paying 4 times more for the MB150E. In short, if I put up the cash for the MB150E will I, as a hobbyist, be able to appreciate the extra features that come with it? Or should I just get the 400RB/112 and be blissfully unaware. I went to test them out at my local Guitar Center but the 400RB is discontinued, and the MB115 is so popular they are out of them. Thanks!