Are you looking to buy new or used? Ex-Demo? If used how old?
Do you have a budget in mind? And what extras do you want or would like it to have? i.e. What could you not do without and what would be 'nice to haves'. Leather is standard as are xenons. Heated seats for me are a must. Do you want a standard or m sport version? M sport is more expensive but it looks better and is more desirable on the 2nd hand market.