PCI or USB Wireless?

which is better for wireless networking? PCI or USB?

Doesn't really matter. Neither one's gonna bottleneck WiFi speeds. Personally I go whatever's least intrusive. The super small USB sticks seem to work. If you're computer's in a tight spot and such, there's PCI cards that come with an antenna on a long wire, so you actually get signal. That's what I had to do with mine.