Focus has factory boost, oil temp and pressure gauges plus the new LV model has keyless ignition plus an awesome voice control feature to make calls and control the stereo! Which at first i though would be tacky and not work but its flawless! Great seats! And the 2.5L I5 turbo charged engine is soooo smooth! You cannot comment untill you have driven this car! The boost comes on smoothly not kicking you in the arse and the amount of pull even in the wrong gears! The interior is accented by red 'submarine' lighting at night which makes the car look even cooler!
The astra is a great car but just didn't appeal to me this time.
Both go fast but the choice comes down to what you feel more comfortable in.