Thanks for all the replies.
We took a drive today to check out whether the Swan or Eagle was best for us and at the same time climb over both and check out all the ins and outs. In the end, with two kids to cater for the Swan would get the nod for size, which means we would need to order a 2016 build as only Eagles had the options I wanted on floor stock.
Having said this on the way out after getting a quote we stuck our heads in a Expander 14.44 and the missus really liked that. So now its time for some more research on Gumtree etc to see what I can find.
As far as hot water systems go it looks like there is an option for everyone depending on your needs / wants but after spending the last week at a top camping spot with disgusting amenities i'm going to make sure we ahve the option of our own showers if needed.
After only ever using a tent we have gone from the idea of a hard floor camper to a Jayco Swan type and while the Swan is still looking good I cant believe i'm now looking up Caravans
Thanks everyone for the advice on a HWS will have to see where this ends up, at this rate we will be looking at a motor home next!