So, first impressions.

Ordered the D5166XU. Is a wince unit.

sounds is great. For installation, even tho they say plug and play, you need to cut out the cage. Im still about 1/2" out, so probably a bit more cutting to do. But unit looks great.

Sound is good. Better than stock HU.

However, there is a 'Car Set' button that acts as the mid, and it is not functioning. I have the Canbus plugged in, and the steering wheel controls function, but no car information, so not sure what I've done wrong or if there is a problem.
The USB connection also overheats, and music skips after about 5 minutes. This is likely the cord extension I used, but will recheck this weekend.

The nav, um, sucks. Looks cartoonish. Will be switching to iGO ASAP.

More to follow