thanks guys!
I have played an OD100 classic plus- that's my next fav amp in the OD100 line, to this one. I'd say this amp is quite different, can be brighter and more penetrating in the upper mids, more "kerrang!!!!" Less compressed. The OD100 classic plus is killer though... whatever Landau gets out of his is amazing, so... just a different flavor. The feedback control is a VERY useful addition as well, as are 2 gains/masters on the 2nd channel for a virtual channel 3 and the way the boost is voiced is awesome (adds upper mids and harmonics, to my ears, makes solos stand out).
I didn't even have time to go into the whomp 2 switch- i usually leave it off, but it can add huge tight lows if you want em..