Thanks for those comments and the pdf to look at, very helpful.
Given the dimensions are bigger on the J 160 it would have the larger wing area and therefore more lift with more t o weight.
The LSA I have been using is very good on fuel, approx. the 12-13 you quoted.
Given the MTOW is higher on the J160 they should carry two adults easier, I have had to watch the fuel amount on board when taking another fully grown adult as I term it.
I keep looking at the adverts for the J 160's as they are becoming more affordable with some low hour ones coming available at times.
Thanks again.