Love the SleepMate
Bought the SleepMate 580A after reading several positive reviews.  I have absolutely loved it since the first night I used it.  It drowns out the sound of snoring, cats roaming in the night, neighbor's air conditioning unit, etc.  I have slept much better since using it.  The small size makes it perfect for traveling too.  I won't leave home without it now.  So glad I purchased this unit.
Rating: 5 stars