I have had the Miracle Noodle brand. I found them at Giant Eagle. If you purchase them, be sure to rinse them before heating them up. The kinda have a fishy odor. Texture is a bit chewy and really not like a noodle at all. They don't have much of a flavor on their own, unless you buy the marinated ones. I added pesto and olive oil to mine. Edible, but not very tasty or satisfying. They are very low calorie/low carb, and if you're just looking for a filler, these might do the trick.
Personally, I won't be buying them again. I'd rather buy whole grain pasta. If you need low-carb pasta, I'd suggest Dreamfields pasta. My mom's doctor suggested it to her because she's diabetic.
Dreamfields Pasta Info