I looked at this too, decided it wasn't up to the job like the others, to big, takes up floor space, to much altering for it to fitted, takes up floor space, have to strap it down to make sure it don't move. That's why I went for L5.
But yer its great working with hot water, everything stays nice! Even the an stays nice and warm!
I have`nt had any of those problems 
Compared to the L5 you have all the problems! Lol
Oh you are a right Mr Know It All are you not.The OP is delighted with his new hot set up, BUT.....yours is better....yawn,yawn
not really, just spent about 2 months research on all the portable gas heaters there are that can be used within a van, and the L5 is the smallest one, space saving, can be mounted anywhere, one that dont need any changing, easy to get fittings for, economical one thats on the market for under £170.
its always worth doing the reseach first as its a lot of money to spend on something that you cant walk into a shop and see all the diffrent types in front of you.