I have just purchased this Garmin Sat Nav for £150, halfords are selling this exact model online for £230. The T in the number stands for traffic, which is free, unlike TomTom where you have to spend an extra £50 quid to buy their receiver! Heard mixed reports but thought I would give it a go, especially at this price! It has:
Bluetooth for handsfree calls
Just to name some of the good features. Well worth it if you are looking for a middle of the range sat nav at a very decent price. It only lasts at this price till 4th Dec.