Take a look at the AvMap. It's absolutely awesome.

We bought ours at OSH 2003, and it has utterly changed the way we fly.
It's on the high end of price, but you will not regret buying it,
guaranteed.

I bought an AvMap upon Jay's recommendation and can say it is an awesome
unit. HUGE color moving map, flight plans - even approaches (VFR GPS).

KR