I did the Western Wonder in August 2008 and I have to say it was one of the best weeks ever! We had a fantastic group, a great tour leader - thanks Eric! - and saw some amazing sights - Yosemite, the Grand Canyon and viva Las Vegas of course! Couldn't believe the scale of everything at the Grand Canyon and flying over it in a helicopter was a once-in-a-lifetime experience. Definitely go on this trek if you get the chance!
P.S. Rusty and Betty rule - it was so cool visiting them on their ranch!