Hi Susan
Go for the 130bhp. (A colleague of mine has the same model, same year and I use it sometimes but at 115bhp you can certainly tell the difference between the two). I bought my 2L TDCi Zetec last October. It's certainly got poke, excellent work horse, plenty of torque. Pulls up the steepest of hills, economical on diesel. Plenty of room in the boot. Go for a hatchback as you have better access to the boot. The only downside is the interior fabric looks cheap and the front seats arn't 100% comfortable. I had low profiles (better for towing) and mega alloys fitted on mine. Watch your speed though, if you put your foot down make sure you don't get caught speeding like I did the other week.
Regards
Lisa.