We have an older 32' Terry "Sky Lounge" that we really like.
On the Plus Side:
Stand up headroom from to back.
Lots of glass in the living and dining areas make the living area light and airy.
A physical separation between the living and dining areas. We are not fans of the great room concept, but can still converse between the areas.
A greater sense of privacy.
More kitchen counter space than some front BR models.
Easy to keep the front warm and the rear BR cool for sleeping.
Second outside door.
Less noise and light intrusion from the front into the BR.
More stability, don't notice anyone moving around in front while sleeping in back.
On the down side:
Slightly higher, but only 6 inches more than front BR according to advertising literature.
Some complain about the steps into the LR area. We find they are easier than getting into the trailer from the ground. We usually don't go into the LR unless we plan to be there a while so it is not a problem.
We spent over five months in Alaska in it, and found the storage, both inside and outside, to be adequate for our needs. We would definately get another.
We tow with a pre-turbo SRW F250 7.3 diesel, averaged over 10 MPG on the Alaska round trip, about 5800 miles.