Went from 2007 to 2009 mariner to save gas - no power - chose Edge after looking at Subaru, VW, BMW, Mazda CX7 - good deal on a great car.
We really like it.
Wanted Sync *worked great on Mercury* did not want MyTouch.
So we got an SE and got neither lol.
The entire car.
18 inch wheels should be standard plus - do the math - it improves the fuel economy.
As with all Ford products - dim bulb headlights.
Power passenger seat and dual climate control would be good options for low end.
Also Ford, add a subwoofer for the low end stereo.
Seats are ery comfortable but agree with other reviewers that headrests canted a little too far forward.