You could do a lot worse than Air Desert Pacific, if you are going without a partner, you may wish to consider the accommodation at ADP, its a large residential bungalow with facilities including washing machine, cooking facilities etc. although it is a bit tired. I didn't actually stay there, only visited. What I did find was that it smelt badly of cigarettes and for that reason alone, I would not consider it. There are lots good accommodations around the area, ADP can get you good discounts too.
Rental rates increased ever so slightly a couple of months ago, so information in old copies of Pilot etc may be inaccurate. Check their webb page
http://www.adp-flight.com/
The folks at ADP are great and certainly neither I nor anybody else had cause to complain about "extra costs"
The aircraft are not new, but as Grandad Flyer says, the aircraft come out of ADP's own workshops with a fresh 100hr.
The airspace around La Verne is incredibly busy and so is very good experience. Loads of airports close by many kitted out with ILS's and lots of heavy traffic including commercial jets.
Colin is the manager at ADP, he is very friendly and the people at ADP actually put themselves out if you have a preference for a particular aircraft.