Sleep machine: Sound Oasis S-550-03

Okay, so this is my favorite sleep sound machine. A few of the things that make it so good in my view:

• the sounds don't repeat very quickly
• the sound quality is good
• you can add cards to extend the system
• there is a great big button to turn it on and off (as opposed to many machines that have combination volume and on-off)
• the sound can be played for a set time (30-, 60-, or 90-minutes) and it automatically shuts off
• the sound fades out gradually

SleepWellBaby has the best prices: the unit for $49.95 and the extension cards for $14.95. I got these cards:

• Rhythms of the Sea Sound Card
• Wilderness Journey Sound Card

The built-in sounds are pretty good without resorting to expansion cards. My wife is partial to the summer night sounds whereas I prefer the ocean surf.