As mentioned in a previous post, I had an offer to trade my Z-Wreck for a Matchless SC-30. Thinking back, a few years ago I traded my Dr. Z Stangray for a Bad Cat Black Cat 2x12 combo and didn't like it.....I ended trading it off 3 days later. Quickest amp turn-around I ever had. I guess my question is, are these basically the same amps? Or is there a significant difference?