Di Novo & Mx Revolution VS Microsoft 8000 Desktop

Evening all,

My venerable microsoft optical comfort desktop is on its way out and I am looking for a replacement. Given my increasing amount of alone time with my pc I am looking to pick up a snazzy futuristic keyboard & mouse combination. I am willing, grudgingly, to give up having a num pad. My two choices are

Logitech MX Revolution Advanced Cordless Mouse (http://www.logitech.com/index.cfm/mice_pointers/mice/devices/130&cl=gb,en)
plus
Logitech DiNovo Edge Bluetooth Keyboard (http://www.logitech.com/index.cfm/keyboards/keyboard/devices/192&cl=gb,en)

or the

Microsoft Wireless Entertainment Desktop 8000 - Retail
(http://www.microsoft.com/hardware/mouseandkeyboard/productdetails.aspx?pid=080)

Both total to 150 squid on amazon and I am unable to pick between the two.
Has any1 tried both and have an opinion?

Cheers

Other relevant system details
Vista 64 bit ultimate

i have the dinovo/mx rev and i LOVE it. I just started using the trackpad and i have always hated them in the past. but with the thumb, well, i have used the trackpad rather than putting out my hand for the revolution. it's sick, and less money. 100 for a amazon (NOT USED) used dinovo and about 50 for the rev.