Car supermarkets main problem is that they bang out crap cars on expensive finance
You can avoid problem #2 by paying cash.
Its possible the car is still a rotter. it could have marks all over it and all sorts of issues and been abused by its previous owner, but it doesnt harm to check as not every car they have will be a bad 'un
Oh yeah, absolutely, most cars there look pretty good usually, but obviously you never know how it has been treated, the one at the Ford dealership looked absolutely spotless, in normal light, in the showroom, not jazzed up with lights or water etc..but yeah, I'l give it a looksee, the parking sensors would be a nice feature to have, but again, lived without them until now, not gonna go between 1 car and another on 1 option!
Although, loving it in Black when I see them, but also in Blue...always wanted a blue car, but also always wanted a black car!

Shame you can't find them in white much, would bite one STRAIGHT up!