If you want to get one of the best systems that are OEM-style, then look up Fly Audio. I've seen the ones for the Lexus 2IS and they are better than factory. While pricey, the maps and software updates are free after the initial purchase price. You definitely won't be disappointed with the system since its integrated so well.
Since you're in OC, go to the Automax service place off Jamboree and check out the system. Both Nick and Mat are very knowledgeable about it and can help you with any questions you have. Tell them Isaac referred you from Club Lexus to check it out