I have a Preggle and I love it! It's shorter than a Snoogle, like 2/3 the size, so you have the curved part for your knees and a long length for your tummy, but can use a regular pillow. It's a good size but doesn't take up the whole bed.
It's this one: http://www.amazon.com/Leachco-Preggle-Comfort-Air-Flow-Pillow/dp/B000T5PMZ4