We had a 33 ft Outback Sydney...and I loved it. My dh did not care for it....he felt he was dragging a condo and not camping. We both love our Trailmanor and it is much better on mpg. I think that the ones with the slide out beds are shorter then the Sydneys so you could probably get a little better mpg then we did.
The site you want to visit is:
www.outbackers.com it is huge and the folks are very friendly, helpful and some times silly/playful.