Help me decide on a car pls

[T-Rex]

Yo!

I have a healthy budget of £15,000 to spend. I'm torn between two different "rides". I'm looking for a nice sports car and the two that have caught my eye are:

Vauxhall Astra VXR - £12,999

http://pictures.autotrader.co.uk/img...a?id=680463464

http://pictures.autotrader.co.uk/img...a?id=680463828

http://pictures.autotrader.co.uk/img...a?id=680463931

Lotus Elise - £13,495

http://pictures.autotrader.co.uk/img...a?id=682715974

http://pictures.autotrader.co.uk/img...a?id=682716214

http://pictures.autotrader.co.uk/img...a?id=682716243

I like the look of both. Probably the look of the Lotus a little bit more. Although they are both under 15 g's the insurance I would pay on the Elise is way higher because of my age (21). I can afford it but I don't know if I like the Elise that much more than the Astra to pay the extra benjamins. I don't know what I'd do with the extra money I saved if I bought the Astra anyway. Opinions?