iPaq 4000 series and 5000 series, and 3800 series, and 3900 series. Toshiba's from the e740 on (or maybe some earlier one's?) Basically every halfway decent PocketPC PDA other that the iPaq 1900 (which didn't have wireless while still being an awesome PDA) released in the past 1.5-2 years has had WiFi and/or Bluetooth/ Me = too lazy to look prices up.
Also, it's spelled Axim.