No! I picked mine up yesterday and I haven't stop grinning.It might be worth £300/400 more in a couple of years if it's a 18 plate but depends how long you're keeping it.Enjoy now, it's worth it.
I'd wait because I am a plate snob When I got mine on a 15 plate it was an ex-demo and I picked it up the day before the 65 plates were out, it was rather annoying