Hi Barry,
We have a Fleetwwod Heritage 560 with two single beds on a single axle weighing 1500kgs (MPTLM) which we pull easily with a VW 2.0Tdi Touran. They are without doubt the best quality van on the market.
Look at the alternatives... A twin axle caravan requires a 4x4 to pull, we get 30mpg from the Touran whilst towing and 42mpg solo.
Lunar build quality is suspect to say the least, the Lunar beds are 2ft 6ins wide, ours are 3ft!! Also on the Lunar the shower door opens out! So when you've had your shower why not put water on the passageway carpet!
Hymers..reasonable build quality but ssooooo heavy and a very limited market for dealers foe servicing( Find your nearest dealer, I think ours is 120 miles away on Leicester)
Swift...A discontinued model with narrow beds and a tiny lounge.
Hope this helps