The 1.8's arent a slow car, still a fair bit quicker than the 1.6 - but to be honest all 3 are so similar fuel consumption wise you may as well have the 2.0. If a nice 1.8 came up id certainly consider it.

I'll be honest and say I would go for a nice sea grey/black 3dr Titanium, you can pick them up for little more than a Zetec and the spec is unreal; auto wipers, auto headlights, climate, auto dimming mirror, reverse parking sensors, half leather, Sony MP3 Headunit with 6 disc, built in Factory Bluetooth, voice control, ipod connectivity, mini radio (with main headunit control) in the back so 2 people can plug in their earphones...i could go on..

I picked up a 3yr old 2.0 Titanium in Sea Grey with 22k and full ford history for 7k, it was absolutely mint too.

So much car for the money IMO.