Vegas is bleddy awful, been there twice, had to go back 2nd time because it was too windy for the Grand Canyon chopper ride on the first occasion. Both times, I had 3 days there to get some time back from 3 weeks in the Hawaiian Islands, which is the polar opposite to Vegas.
Middle East IS very neat and tidy, but it's a tad new, or rather the parts that us tourist sees.
Never done Miami, Florida etc, nor do I fancy it at all, certainly the West side of the US is quite nice and of course NYC is very interesting to visit.