Alaska is no good in the summer... mosquito's, 4 hours of dark...
Winter's are great, but cold and generally cloudy on the south coast.
Best places are Arizona, New Mexico, Nevada, Utah, Colorado, Wyoming... my retirement property is directly west of Pueblo Colorado, ranked 13 in number of days of sunshine (i.e. clear skies).
Number one in the nation is Yuma, AZ... but who would want to go there?
Summer's in Yuma are like summers in Alice Springs...
http://www.ncdc.noaa.gov/oa/climate/...pctposrank.txt