If you want serious training go next door to Angel City Flyers. Its run by an Irish guy so you get to train with JAA in mind as well.
I done my multi cpl/ir with no complaints whatsoever, and their aircraft are all brand new.
ACF are a very good training organsation and would definitely reccommend them. One thing to correct is that they do not own any aircraft, last time I was there they used aircraft from a variety of sources including Long Beach Flying Club, California Flight Centre and Rainbow Air.
Book ahead with them as they have a good reputation and hence get very busy.