I had the same problem looking at cars. I always wanted a RX-8 but now the tax is done on emissions it is very high. I looked at loads of different cars but i went for a because of the fords reliability. If you buy an you won't be disappointed.

Great handling
Good fuel economy (providing you don't rag it everywhere)
Insurance is not as high as the other cars
Tax is £200 so not that bad
Good reliability

I would say the only bad points about the car is it's not really a motorway car, if you are looking to do long journey's on the motorway, then get a diesel.