What kind of music are you all into?
First of all, I wanna say simple is the best IMO.
I play blues, classic rock, hardrock, thrash, progressive metal. Well, I almost nail of the tone of SRV with my strat, John Petrucci, Metallica from my Roadking. It's so versatile, but the Roadking lacks something I can't describe it for bluesy stuff. For the classic rock, the roadking doesn't have a very fast transient attack to compare with some amps IMO, for sure it sounds good. The high gain of the Roadking is pure chug-chug rectifier high gain, you can't tweak it close to Marshall. If you are into the tone of Marshall, just purchase a simple head, like Germino, Suhr products.
The most versatile channel switcher by far is my od100 sh/se IMO, the dirt sounds much juicer, sweeter than my roadking. It also delivers better marshall-ish tone and the od100 sh's clean channel can do some of the very best dumble type of sounds I've ever heard, very fat, thick, warm.
If you are all into blues & bluesy rock(from your name I just guess), why don't you get a DrZ or Victoria? you can save a lot of money and their amps sounds pretty amazing, the Z-28 is my favor. Long&McQuade carries them.
jist my 2 cents.