I totally hear you. And I was set on the Expanda but one I can't tow the outback I want and I am just not sold on the bed ends. But I may hire one in the next few weeks to test it out if I don't get anywhere with the salesman on the 17.58.3. I love the space in the Expanda and being rained in would be way more comfortable.
Here was I thinking you'd got yourself sorted out!
Rainy days are definately more comfortable in an expanda ...
We were a bit iffy about the bed ends but have absolutely no problem with them, given the extra space they free up. Comfort of bed is fine with a mattress topper, sheets stay on when folded and just have to toss pillows and doona on when lowered. We've now got the whole setup down to max of 12 mins with beds set up and awning out and BBQ ready.
Also in hot weather you get a lovely breeze with canvas opened up and we've found it warm in winter. Rain is no problem once you get the hang of keeping mattress away from canvas and we just use the privacy screens for a damp deterrent so haven't even used our storm covers so far.
Good luck with your deliberations.
Your needs are different from ours but we had doubts about set up nuisance time, comfort and keeping dry. We had a Swan previously so all those things had to be addressed as they were a pain in the proverbial with the Swan, not in the expanda.