I bought the KH120RHS about week ago. The guitars that I play through this amp are primarily an Epiphone SG with EMG 81/85 and a Fender VG Stratocaster, among others. I love the crisp and rich sound that the clean channel provides, even at high volumes. There are two "overdive" channels that can be selected with a front panel button, or via a footswitch. Both sound great. There is a "Contour" dial which allows control of the mid range frequencies.
Waiting longer in order to save for the KH MTS series was not an option for me. Getting the KH120RHS amp with the cabinet containing four 12" Celestion speakers for much less than $1000.00 was too good to pass up.
My only negative is that the amp lacks some of the tonal qualities that a tube amp, or an amp with a tube based pre amp can provide. Ideally, I would have purchased the MTS series with the ability to interchange tube based pre amp modules, but that could have easily tripled the price.
Great amp, great speakers, great price!