We have the Atlantic Blue, I didn't want black, white, red, silver or grey in flat or metallic at the time as we had done those colours to death and we found a dealer with an Atlantic Blue in stock who offered a good deal on our p/x. It is a bit of a "strong" colour and I wasn't sure when we first got it, but have come to like it, it seems to contrast especially well with the red GTi badges the Performance model has.
I keep it fastidiously clean, and the car always attracts compliments wherever we go in it..............
But if I had a free choice it would be Isaac blue..............