I have a 2009 Kluger and I absolutely LOVE it.

1. We have 2 children, 1 in a maxi-rider AHR and the other forward facing in a turn-a-tot (quite bulky), we would be putting DD2 in an AHR aswell eventually, is there plenty of room for an adult b/w 2 carseats?

I have two in HiPods, in the captain's chairs. Easy to fit an adult between them if I had to . But I have the seven seater, so any extra adults end up in the back-back IYKWIM!

2. We are looking at getting the 7 seater, when the seats are DOWN, is there plenty of boot space? ie we have 2 dogs we take away camping who normally go in our subaru hatch/boot, there would HAVE to be heaps more room right?

It's massive. Seriously massive. Much more room than my parents' Forester or my old Commodore sedan. Even more than the Commodore wagon.

3. Are they OK off road, i'm not talking about using as a 4WD vehicle for huge inland trips but for getting through some bumpy tracks on our way to camping spots is it ok? I mean my subaru got through a HORRID spot last week, the height on the Kluger would be of great benefit but how stable is it?

I have the 2WD version, but have taken it on dirt roads and it's much nicer than my Commodore was. Haven't had any issues with body roll or suspension.

4. Do you LOVE it.. i love my dad's Prado but DP's not so keen and we both like the Kluger, am yet to go and test drive but were in dreaming stages at the moment while we work out some financials and before my poor Suby dies

I absolutely LOVE it. No question. My parents bought a new Forester just before I bought my Kluger, and my Mum is kicking herself because mine is much nicer. I test drove so many different 4WDs, but the Kluger was the best for me. It's blue and is named "Cookie Monster".

Good luck!