Mark IV, its extremely versatile and everyday seems like the tone just gets better and better. Whether I am jammin with my band or by myself, it gets me headbanging none stop. Mark IV's rule. \m/
THe Mark IV liquid lead is hard to beat. I think it complements a Rec very well. I happen to own a 2 ch and you just can't get that from a Rec. The Mark IV cleans are certainly passable also. I would never say a Mark IV clean is not good enough.
Mark IV complements the Rectos very well. Not only is the MKIV *extremely* versatile, you'll have two amps with compleeeeeeetely different voicings... just imagine the vast spectrum of tone you can get