Adjustable frames are similar (once you get to the top end) it's the Purple Mattress that makes this work
Price is a bit higher than the competition
I shot a video of various mattresses on adjustable beds. Purple's mattress was by far the best one. The Purple mattress is heavier than most, so it conforms with the different positions of an adjustable base. The mattress is kind of like a waterbed so if you have a massage feature (like the purple powerbase does) the vibrations go throughout the entire bed. You can watch it in action https://youtu.be/qXXYeT7d2yENon-Biased has used this product for one year.