I use a 212 vertical rectifier cabinet with a Mark V and it sounds great. At times I would like to have more presence, so I was looking at the 412 rectifier slant cabinet, but at one hundred pounds it's a bit difficult to carry up and down the stairs by myself. So I was thinking about adding a 212 rectifier horizontal cabinet and placing it under my vertical cabinet. Mesa has the compact and the regular horizontal cabinet. Can anyone tell me about the sound difference between the two?