I'm going to look at some 3.5t Boxes over the weekend and I was wondering if anybody had any advice on what I should be Looking for in the vans and what sorts of Questions to ask the sellers.This is my very first purchase of a box so I feel rather in the dark about the whole thing!So far I've asked the sellers about MOTs and advisories as well as the floor on the box. I was also wondering if there is one type of floor that is better than others?Any advice and help with regards to box purchasing would be most appreciated. :)