YourPBFriend is the best Paintball store in the Bay Area; well worth the drive from San Jose! The staff is great and extremely knowledgeable, and they will help you find the equipment that suits your playing style!
They have everything in-stock from entry level to advanced paintball markers, and they will even let you test fire markers that are on their "Used" rack - they have an indoor reball catcher! Not only will they help you find the marker your looking for, but you can test out other markers to see, first hand, the differences.
I love this store, and I have referred many friends that are recently getting back into to paintball to them; it is a great place to get good deals on paintball markers and equipment.
Also visit their website to check out which used guns they have in stock if you're looking to test something specific.