Sorry for late reply. Busy weekend.
I do know everything I need to know about the car. I was purely asking about the buttons, Perhaps my post wasn't very clear.
I've done plenty of reserch and the diesel is better *quicker* if you call that better. We wanted a family car so we dont intend on ripping up the roads etc. We replaced a Astra SXI 1.9 CDTI. I'm not sure what the difference will be in the drive, I will find out on Thursday. The reason we didn't test drive was we arrived at 5:00pm and managed to negotiate the car from £13500 to £10500 with a £50 deposit. That wasn't easy and took time!