Hire of motohome - panel van transit style

Hi everyone.

We are considering changing next year from our caravan to a transit style panel van motorhome/campervan. Firstly, can anyone recommend some good hire places specifically of the transit style panel vans and secondly has anyone driven both the shorter and longer panel vans and what are the main differences. We only need a 2 berth for myself and my wife and she would like to drive it as well but is concerned the slighty longer panel vans will be harder to drive. Any advice and names of hire places would be greatly appreciated as we start the process of looking around ready for next year.

Adrian and Judith