If I could have specced a car 'a la carte' I'd have probably gone for an FR and added rear parking sensors, ACC, alcantara seats, armrest, and digital dash.
I like the KESSY, but I wouldn't pay the £320 that VW charge for it on the Polo. The front parking sensors and the reversing camera are both a waste of time IMO. The front sensors are just annoying, and while the camera is a nice to have, it's not worth paying for.
The reason I went for the Xcellence Lux was because I wanted the ACC on top of what the FR Sport offers.