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.