when something needs to be protected
I have a line 6 M13. I used to just haul it in the trunk of my vehicle, throw it on stage, hook it up and play. One night I noticed some of the effect selector buttons were not working. I pushed them up and down and no change in effects type. I realized these cheap plastic buttons were not meant to have tool boxes and guitar cases stacked on top of them. After getting the buttons fixed, I looked for some sort of carrier for the M13. Line 6 doesn't seem to offer a case for it. I stumbled on the Gator mixer bag page and found one that was close enough in dimensions to do the trick. There is a little extra space, but throw in some cables and the power supply and it all fits rather nicely. Being padded, I now don't have to worry about the little plastic selector knobs getting damaged...as long as I don't stack **** on top of them. Overall, when your gear starts costing $500 plus dollars a piece, it only makes sense to make an effort to preserve them.