Here's my solution that works out great! The Garmin 2610 pictured is both extremely easy to see in all light/dark conditions (yes, including direct sunlight). With the touchscreen input and included remote it is very easy to manipulate the software, etc. This unit blows away the BMW factory nav. that was in my 1999 740i. I don't think I'll tie myself down to a factory installed unit again. It's nice to know that if technology changes you can simply upgrade to a newer design.

how did u run the power cable ? i got the a dell pda x50 w/gps but i dont like having the cables running to the front of the radio to the lighter.

I took the storage bin out, ran the power cable down through the dash to the glove box (really very easy). Once in the glove box I removed the rechargeable flashlight and replaced it with the OEM aux. power adapter. This gives you a 12V socket in which to plug the GPS power cable. The best part is that the cable is hidden (for the most part) AND the power is switched off when the doors are locked using the car remote. When unlocked, the power comes back up and the GPS locks on the the satellites before the car is started.

thanks ...now i have to drive 80 miles to the dealer to buy the adapter:tsk: but at least i wont have a spider web of wires in front of my radio:)