Was in California in October 07' and went to both Rookie's and Bagatelle.
Rookie's is a great shop and has some good mod tunes (they haven't sussed this stuff yet unless it's crossed over to the nothern scene), but not much northern as most of it goes to auction, I found this out from speaking the owner, also they have all Manships guides. There are some interesting 45's on the front counter and also on the floor at the backside. I visited twice in two days, on the first visit I spent about 3 hours rooting around and the assistant did me a really good deal on a bulk number of items. On my second visit the owner was there and he was less generous. The stuff here is fairly well laid out, although there are loads of mixed boxes on the floor.
At my one visit to Bagatelle I spent about 2 hours going through boxes of 45's which are arkward to get at as the are positioned high up. The are a couple of interesting boxes next to the counter. Again they use Manships book, but charge about 1/2 the book values for the cheaper stuff.
Forgotten to mention both have record players with headphones, so you listen to whatever tracks you want.
Happy shopping.