[throwawayokzzz]

I use PureSleep, a boil and bite style device, and not the best for adjustment, since it only has three settings (each about 3 mm apart, from 0 to 9 mm). I had to cut it apart to adjust it after the first fitting.

Better options may be SnoreRx Plus (1 mm adjustment, from 1 to 6 mm) or VitalSleep (1 mm, from 1 to 8 mm) which allow for easy adjustment, no cutting required.

Note that none of these devices are rated for sleep apnea. However, the cost is $60-100, whereas a fully FDA-approved device runs about $2000. And not everyone who has sleep apnea can benefit from an oral appliance. You don't know until you experiment with one, and it can be money wasted. So I felt justified in trying a cheaper one out off-label to see if it helped alleviate my problem before investing a lot of money. I'm still considering paying for the more expensive one since they are FDA approved, seem less bulky, and may be less likely to cause tooth movement in the long run.