I was going to buy an SV20combo, then I heard a YouTube demo of the SV20head with the SV212cab compared to the SV20combo, the combo sounded very boxy. I'm thinking of going with the SV20h and a 1x12 cab. Why is the MX112R cab only $229.00 and the SV112c is $599.00 is the speaker and build that much better ? Does anyone here use the head thru a 1x12 ? I don't want to lug a 2x12 cab around.