I do a lot of camping in Tas - mid-winter is great because there is usually no-one else around and that is my preferred style. I also think there is no such thing as bad weather, just bad preparation for weather.
I have now had my Ulti for 6mths, previously had a Campomatic and always enjoyed the flip=over go to bed idea. I also had to prepare food and eat outside on all but the worst of weather conditions, including insects - occasionally I would stay inside the camper with a small gas bbq and stay warm and dry.
I didn't set out to buy an Ulti but found that it just had so many features that suited me, including keeping SWAMBO happy, that it was an easy decision in the end. I had agonised over KK, AORC and Campomatic - went to the Melb 4WD show, compared the lot on the one day and made my decision very quickly. I knew what i wanted after many years camping.
Indoor food prep is GREAT for the reasons you have stated, the lounge is really comfortable. I also carry an outdoor bbq and often cook on a fire. The storage
I have found to be more than adequate and I even carry the proverbial kitchen sink....I have spares of everything, esky, second fridge (running as freezer), jerry cans, chain saw with extra fuel and all the annexes, chairs, metal bbq plate as well as the portable gas bbq. Clothes and long life food items are stored in the interior wheel arches under the lounge......The nose cone when organised well, can hold heaps of gear and it is still easy to access. Not to mention standard roof rack.
I have a setup where I can boil a billy on the roadside without opening the camper up too, that seems to be some peoples argument that the Ulti might not be as flexible as the others with slide out (outdoor only) kitchens.
The setup and packup times, well I have meant to time it but it is just so easy that I haven't bothered - without raising a sweat I think I can be in bed 10 minutes after stopping, full annexe setup would be the same for pretty much all ct's I reckon.
It also tows really well - have tested that out pretty well too, some of my camp sites are pretty hard to get to - dual air lockers on the cruiser help me to get away from the crowds.