I was wondering what all the fuss was about the 1200.1 also, I mean, JBL, they are ok, but not that great. So I was in the local shop one day, and a guy pulls up with a slammin system. I asked him what he was running and he said a pair of L7 12's. I said ****, you must have spent a fortune to power those. He started laughing, and said yeah, a whole $580 for 2400 watts. I said your kidding, then he showed me the 2 1200.1's. He said he had the MTX8100 on them, and it was loud, but not what he expected, then a buddy let him borrow a 1200.1, they compared them, and he said they metered it and there was a slight increase in SPL with the 1200.1. BTW, he was running them both @ 1-ohm. The amps were hot, but he said he had never had one shut off.
So basically, I could tell people to go out and buy an amp that costs twice as much, but most people could put that extra $$ into some other area of their car.