Can't speak highly enough of Wendy she was our tour manager when I was on this holiday. It was the fated trip we got stuck in Atlanta on route for a night and then half way through the American government closed the national parks. Wendy worked her socks off finding alternative places to visit and think did amazing, certainly some spots we visited were arguably better than the original holiday.
Also had Richard when I did route 66 and he is also a very competant manager with lots of experience.
Whichever trip you are on you will be in very capable hands.
Mick