I have a Contract Lease car thru the company I work for - so slightly different. But Audi quoted me several hundred pounds MORE per month than the company I found on the internet.
As long as the pacakge is the same I would go with the cheaper one.
Is maintenance included?
How many months deposit is it?
Do contracts run for same length of time
Are tyres included? (ie wear & tear)
You will I think face a charge when it goes back for any damage that is not general wear and tear. Ie damaged hubcabs (kerbed them!) and dents or scratches. Again its normally cheaper to get the repairs done by Chips Away or someone before sending it back as the dealer will charge loads.
(Personally.. I wouldnt get a Nissan though! But each to their own!!!! ha ha)