Looking to replace the factory fit nav unit in my car as its not so good.

I want a double din screen and nav unit...but not sure which are the best.

Have seen an alpine NVE-N009 nav unit which looks ok.

Any suggestions or forums which I could browse?

Cheers

the alpine unit is by far the best sat nav unit on the market,the only thing you need to chose is how you are going to veiw it.either through an external screenor replace the oe radio with a singe din radio with radio/dvd or double din?the only thing i would say is buy it from an autorised uk dealer NOT an internet or"max power"shop