Looking for tour advice Alhambra

I have no specific tour recommendation to offer since I used the audio guide from the Alhambra. I want to warn you, though, that there have been tours offered in the past that did not include the Nasrid Palaces, by far the most spectacular part of the entire complex, and the one for which tickets regularly sell out. Be sure any tour you purchase explicitly covers the interior of the Nasrid Palaces.

Be aware that you can only enter the Nasrid Palaces one time on any ticket. I think that limitation may also apply to the Palace of Charles V, which is now a worthwhile museum (though I could be wrong about the single-entry limit). This means that if you feel the tour has rushed you through the Nasrid Palaces, you will not be able to return to them later. I think this is a very real possibility (and probably virtually guaranteed if you like to take a lot of photographs). Most of the Alhambra tours last only about 3 hours (some even less), and it's easy to spend a lot more time than that seeing the Alhambra. It would be ideal to have a tour that goes to the Nasrid Palaces last (and not late in the day) so you could just stay inside if you wanted more time there. I have no idea whether any tours follow that pattern.