March production car here, I don't know what iDrive was like before ...but I love it. I use the NAV to find plenty of places - have Sat radio and use it for that and iPod and ...i could go on and on about how useful it is.
You don't have to be techy to get the hang of it, but if you understand how to work an iPod you can work the iDrive. Apple and BMW must have worked on the iDrive together...
Took me about an hour to understand how it works, then its all messing with and remembering how to get what you want through the menu's. No more difficult than using any computer.
People that hate the iDrive are in the dark ages.