We just picked up a 2006 FB on Thursday, the previous owner had removed the mattress and put in a futon pad for some silly reason... No way that is going to fly, after all the whole reason we sold our little 21' Airstream was to get a bigger unit with a real bed that we both fit in!
We have had a sleep number bed at home for years and love, love, LOVE it! A quick google search today I found Camping World offers a Sleep Number RV Short Queen with rounded corners. Just by chance, with just a few hours left, their "Cyber week Sale" ends today. The Mattress was offered at 35% off and free shipping. They also offered free in store returns if it doesn't fit so I ordered one without doing any research.
I'm really glad to see all of you raving about your sleep number mattresses, it makes me feel a little better about such an impulse buy!