I'm in the market for a Markbass combo and am currently deciding between these two. I would appreciate your advice in deciding. They seem to be quite similar with the exception of the Aux input, headphone jack, no line out level and no extension cab features of the Alain Caron cab. I've heard complaints of hissing from the tweeter in the 121 Lite. Is that the case for the 121H as well? How bad is the hissing? Also in Australia the 121 Lite is almost $AUD400 more expensive. Which combo would you guys recommend? What is the best overall Markbass combo? Thanks.