I'd like some advice on a car?

I've had my licence now for 6 month and have driven quite a few cars but the car i have at the minute is an 02 fiat seicento (rubbish i know) but it's unsafe and i'm looking for a new one. I have around �7000 for a car. I've looked at a few cars including, nissan micra, mazda2, vauxhall corsa and suzuki swift, all which are the newest models. I'm just looking for some advice on what would be a good reliable car for me. Thanks a lot