We had people telling us what great deals they'd got on Tesco's only to realise that it doesn't work for everyone as at the lower levels the cover on a complex 4x4 like the Treg is just not enough.
Also make sure your policy does cover 4x4.
Two of us who went with Warranty Direct both ticked the box on line for 4x4 and auto only for the paperwork to turn up wrong - no 4 wheel drive cover! A phone call in each case put it right so check the paperwork immediately you get it!!