Re the Las Vegas and the Boulder: to me they are polar opposites.
The Boulder museum is packed PACKED with significant cars (thanks to the Millers). If there is a complaint it would be that so many are so close that it's hard to give each the contemplation that one may want to do. The prototype GT-40s are stupendous. I was there for the show earlier this year. Show 'so-so', museum fantastic.
The Las Vegas, well I can't argue that everyone has to go and make their observations. No significant cars. Zip. Tour guide: nice person- had minimum knowledge. I did not dare say I've had a 65 forever, it would have been awkward and I was a guest. Would not make time to go back, but it's part of the 'Shelby' world I guess.