This device seems to have slipped under the radar for many people.

E-TEN M600 (Eng, UK Plug)

It's a Windows Mobile 5.0 device that has a 400 MHZ Processor, WLAN, BT, SDIO, a 2.8" 65k TFT Screen, 1.3Megapixel camera and is Quadband.

The E-Ten site gives more details but it looks like a really nice device.  I haven't tried one personally (anyone comment on it?) 

http://www.etencorp.com/products/Communication/600.php

You can also buy it for just under £400 from Expansys!

http://www.expansys.com/product.asp?code=126907