I started using the Contour USB by Bayer a couple of weeks ago and have to say I'm well impressed, you can plug it straight into your USB port and download your readings and view within a minute. The down-side is the finger pricker, it's just a single lancet device and is rather awkward to use, instead I use my Multiclik device from the old Aviva Nano and it fits OK in the Contour carrying case.
The Accu-chek Aviva Nano is a great little meter too but if you want the software to download onto a PC you have to pay for it.