PRICEY BUT WORTH IT
I have owned a Bedge for a few years. I then bought another blow up type wedge (you can read my review on Amazon) for travel. I gave it a great review and was using it in place of the Bedge even when I was home. I bought TWO of those and unfortunately BOTH continue to lose their air in the middle of the night, and I would wake up at 3 in the A.M. with a flat mattress. (I should update my now negative review on this product) I went back to the Bedge and of ALL the wedges I have tested, and believe me I have tested them all (except for the Gravity1st system),  this continues to be the most effective even though it does not cover the whole length of the bed, which is a slight negative, but is long enough at 42 inches to cover the whole torso area. The other downside to the Bedge is that it is way to big to travel with, so I continue to search for one I can use on the road.
Rating: 5 stars