Hi FD,
We changed over from an '05 KK to an '11 KK a couple of months back and haven't looked back. Nothing wrong with the '05 - just more luxuries on this one
You're right about the eutectic fridge - they are brilliant. Draws a fair bit of power when first turned on but we do this at home the day before with the KK plugged in to 240. We mainly camp in the High Country and on most trips of 3 to 4 days don't turn the fridge on at all! It maintains temp very well, although I haven't used it in tropical FNQ conditions.
The kitchen setup is brilliant on the KK - It was a hard decision whether to go the BBQ or the cooker - ended up with the cooker as most of our cooking is on the campfire and we don't do caravan parks.
The hot water and heater.....I can't say enough about this - temps in the minus' and 30c in the kamper at night watching movies with the kids! The hot water - also brilliant - just watch usage - we got the extra tank and will probably plumb them together in the future. For the shower - we just use a large bucket and pump from that to the water heater - endless hot water as long as the kids keep filling the bucket with river water.
Haven't encountered the 'hot' kamper due to locations camped in -but the new tent design has the permanently attached weather shield to the drivers' side window - this window can be opened in torrential rain and remain dry on the inside - there is also a small fan in the flyscreen at the top to expell hot air. If the awning is on then you can have the passenger side window and head window open with no rain coming in.
We've got the kids room and it is spacious. Our kids use full size swags and two fills it - with our old KK (kids smaller) we used COI bunks and there was still room with them on the hard floor for quick stops when we didn't want to use the kids room.
Try hiring one to give it a test run - I'm a bit biased with the KK but have never had a problem - apart from wet canvas - which is a pain in the *&^% - took us a week to dry everything after last time (got home to floods/rain) but it was our choice to go bush when we knew the forecast - couldn't help ourselves
Hope this helps,
Tim