So, I'm hours away from being the proud owner of a 2007 "Package 2" Prius. Things I *don't* have: Bluetooth Good quality audio HID Headlights Foglights Alloy Wheels Winter Tires (what do you guys recommend? We have bad winters here) So I'm thinking I want to upgrade the stereo and speakers (no subwoofer or amplifier, a more modest upgrade) - what is recommended? Maybe add a Nav unit. I'm thinking I want to upgrade the headlights to HID's, are there any recommended? For winter tires I *loved* blizzaks on my subaru impreza and outback; are there popular Prius choices? Any particular place to shop for rims for the second set of tires? Any other popular upgrades? I'm pretty excited! Thanks for the help everyone. I'm also doing a lot of searching to try to answer all my own questions.