We just returned and used Alamo. We picked up at LAX with an Entertainment card discount (free weekend day) and dropped off at Downtown Disney after a couple days in Hollywood. Four days later we picked up another car at Downtown Disney and dropped off in San Diego after four days (with double upgrade discount). Alamo was the only car rental we could find that offered the discounts for one-way trips. The prices also seemed to vary wildly from one week to the next, so keep checking for price drops even after you make a reservation. We stayed at the Grand Californian, and the DTD Alamo office was very convenient because you just park the car in the Grand parking lot across the street after you check in. Just be aware that the office is only staffed by one or two people and is a bit disorganized, so it takes a little time. We found pickup at LAX (midday Saturday) and dropoff at San Diego (midday Tues) to be a breeze. At LAX, after you check in they direct to the row of cars in your class (compact, standard, etc.) and you pick the one you want. At DTD office, you pretty much get whatever they have available. Hope this info helps.
