After researching many of the other more expensive, self-inflating air beds, I decided to purchase the Coleman 4-in-1 Quickbed for overnight guests. It's less than half the price of an average twin size Aero Bed and much more versatile as it can be configured as two twins, one king, or one double-height twin. You do need to buy a separate pump, but the Coleman pump is inexpensive and can be used for other inflating/deflating purposes (e.g., pool toys, vaccuum storage bags, etc.). Each mattress inflates and deflates in just a couple minutes, and it's quite easy to roll it up for storage. It's comfortable both as a single matress or double height. I ended up buying a second 4-in-1 Quickbed, so now I can accommodate up to 4 overnight guests for less than $100. I can't vouch for how long it will last, but even if it sprung a leak after a couple years of periodic use, it would still be worth it at this low price. 4 stars

I've bought two of these air mattresses locally and I'm disappointed--they both deflated notably within a couple nights. I've been using air mattresses for >5 years, and even cheap $15 ones have lasted me years without needing any air refill due to leakage. I don't understand why some other reviewers are giving four- and five-star reviews when they admit that the mattress loses air over just a few days. An air mattress that leaks is a piece of junk, period! 1 star

Easy to inflate and deflate and folds up quickly. Very comfortable and stays inflated 5 stars

The company advertises that this 4-in 1 air mattress set can be doubled over to make a bottom and top mattress, adding to the comfort of the sleep. This would be great, however doing so causes the mattresses to unstably rock back and forth.

They also offer a 'leak free' guarantee. That's also false, and if you have extended uses of the bed, plan to inflate it once every other day, if not more.

The quality matches slightly better than what you can find at Family Dollar for half the price. Only slightly. Don't buy it. 1 star

I don't normally review things, but this was such a good purchase that I can't resist...

I recently moved about 400 miles and into a big city apartment. I didn't have a lot of furniture, so it seemed kind of silly to rent a moving van just for a bed. Finally, after looking at a million different styles, I decided I'd try this inflatable bed. It's compact, so I could just squeeze it into the car with the rest of the luggage. I wouldn't have to fight to get a bed frame and mattress up the apartment stairs. Plus, I figured if I hated it, I could find a 'real' bed at some point.

I LOVE this bed. I've been sleeping on it every night for over 6 weeks and have never (yet) had to refill the air in it. Separating the twin beds is easy, and comes in handy when guests come visit.

One tiny tiny con... The very first time you lay on this bed, it is awkward and uncomfortable. I'm not gonna lie. However, after about 30 minutes, you get used to the 'water bed' feeling, and the whole bed feels insanely comfortable. It's like it takes the bed (or the PVC material) 30 minutes or so to 'relax'... Also, it did not come with a pump, so I had to buy one for 15.99. *shrugs*

I would never go back to a 'regular' bed. This bed can be an elevated twin bed, a king size, two twins, compacts down to about a 10 pound parcel with a carrying strap, is as comfortable as a spring mattress and cost me forty bucks.

Highly recommended.

*EDIT*-- June 11th 2008. Still sleeping on the bed nightly, *still* working wonderfully! The 'top' mattress (when stacked) does need an occasional bit of air every few weeks, but no big deal. 5 stars