As B742 said, the D-M AMARC tour is quite good. Even though you are restricted to the bus, it stops often and I have been able to get some decent photos (by my standards anyway) of the hardware. It is about 90% military though, only a couple of civvy aircraft. A bonus is that often there will be military pilots enjoying the tour while on a break from training. Last time I went there was a gang of RAF Jaguar pilots on the bus, very interesting guys.
The Pima Air and Space museum, which runs the tours, actually has a better selection of airliners, including a Caravelle and a TWA L-1049 complete with period GSE
. They also have a nice display of Air Force One type planes, including a 707, Ike's connie "Columbine", and a DC-6 used by JFK
that you can actually go onboard and poke around in. Again, the museum is mostly military, but it is definitely worth the price of entry. They suggest you book ahead for the AMARC tour though. Here's their website: