Please don't go Dolphin. The Missus had a Dolphin A3 for some time and the colour ended up grating on me - it's just such a non-descript, lazy grey. Plus it's been around for over 7 years now and is totally commonplace. Didn't know it was an A5 option but would be a travesty to spend thosands on having your S5 provided in that colour as an option. My advice - steer well clear. However, Daytona's probably worth the extra bucks (from what I've seen in pics - not sure if I've seen the colour in the flesh on other Audi models), otherwise, Meteor's a great colour for the design.