I wouldn't buy either they don't cut grass.
Now for the serious side. For grass cutting towing a trailer both although the Renault looks to be a stronger beast. Be firm and hard with your dealing prefereably take a feller with you it's known in the trade that women are cajouled into paying the advertised price. Try get a tow bar fitted free including road light socket be ready to walk out.
New that's what you want a completely free towbar or walk out.
I'ts up to you but I would not take a vehicle with mot less than 10months. or retest with new cert but ask for the old one to put with it incase DVLA question it.
Most of all be prepared to walk away from the deal there are plenty of dealers out there.
Bob
March 2010