just from my experience, I would reccomend the MM's over the Warn Premiums. After about a year with the Warns, the stupid spring retainer, the sprung washer", kept coming off, leaving me with no front wheel drive. I tried to take them back under warranty, and I needed my original receipt. Warn's customer service was no help at all, and they wouldn't sell me just the spring. They wanted me to buy a whole new hub fuse. I said yeah right, the hub is under warranty first off, and second all I need was the spring. I tried using ground down retainer c-clips instead of the spring, but they didn't work very well. Warn refused to help me out, so I bought the MM's and they've been great since then. Doubt I'll ever buy Warn hubs again, the design is very stupid. I like the MM's because they use a real retaining clip, not a sprung washer. Hope no parts on my Warn winch ever go bad, because I threw the receipt out........