+1 on the convience of a combo amp in the Rectoverb, it's a heavy beast!! But it's definately got some tone!!!
* If you want the traditional Rectifier tone, go for the Rectoverb
* If you want a versatile amp with great tweakability, go for the Mark IV
* If you want great tone, and can live without some of the teakability then go for the f-50.
* Or wait for the Roadster combo to come out in a couple/few months :wink: , closed back 1x12 with 4 channels.