I've tried the Road King 2x12, which has one V30 and one C90 in a 3/4 back cab with both a Rectoverb and Mark IV head. It sounds wonderful.
For those who aren't familiar with the Road King head, you can assign different outputs to each channel. With a stereo 4x12 designed like that, you can send your cleans to the C90 speakers and your dirty tones to the V30s, for example, and have essentially a closed back 2x12 and 1/2 back 2x12 in the same enclosure. The Road King is a wonderful piece of gear, more than just a 4 channel Recto. The assignable effects loops, outputs, and power tubes per channel are extremely cool. It's got at least as many knobs and switches on the back of the head as it does on the front, though.