Knock Off
My understanding is that the WM brand is truly that, a knockoff. They used to carry the Sport a Seats, and then obviously decided that they could get them made themselves cheaper. I've got 2 SAS's, only had them a year, but they are sturdy and have stood up to our use (2 adults, 4 kids). I can only speak anecdotally about the WM seats, and that is that the ratcheting mechanism is not as sturdy, their foam is a lesser quality/density so that they are not as comfortable and do not wear as long.I think this is one of those cases where you get what you pay for. And heck for only 8% of a boat buck, they shouldn't set you back that much.T J