If you're driving to Palm Springs, Agua Caliente is defintely your best bet. Great games at 3-6, 4-8 and 8-16, all with a kill (they have a 25-50 as well, but I've never played it), and the room is run very well.

Do yourself a favor and avoid Morongo, it has a decent NL game, but it is one of the poorest-run card rooms in Southern California. Not enough dealers, rude management, etc. I think it's due to the fact that since the poker boom, there is a lot more people playing. But, where most rooms try to treat the customers well, Morongo's management looks at you as an inconvenience.

Head for Agua Caliente and you'll have a great experience.