Totally different experience from self supported.

If I was going to do a guided cross country tour, I would do it with Pactours, I've done their one week training camps. they are geared towards strong athletes, with high miles and great service. they do hotel based tours. Not cheap.

I wouldn't do a camping tour, personally. If I'm camping, I want to control my own schedule so I can let the weather tell me what to do. With hotels it doesn't matter as much, as you always have a way to get dry and warm (or cool) at the end of the day.

Also, remember your guided group tour happiness will depend largely on how well you get along with the other people on the trip - total crap shoot.