Shows the cheapest as £424 inc vat (GPS warehouse). Although Transair appear to be banging them out for £399 inc vat...but thats not including the mounting dock (£99) or the very gay little carry case.
Not too sure if either give mil discount but I think Transair tend to be mil friendly and may knock a few quid off.
I've had a 196 since 2003. Used it for flying, driving and diving, couldn't recommend it highly enough. Although I've noticed that the peripherals are getting harder to get hold of.
If you can afford it go for a newer model, (USB ports etc).
The little carrying case is gay but it is specially designed to protect the display.
Found the virtual ILS very useful.