First time I've heard someone say Malwarebytes sucks. Is this more of a "Recent update makes it bad" thing or "The company behind this software is horrible"? Personally I've never had a problem with them.
They don't give a damn about privacy, if I'm not mistaken were once caught distributing "fake" malware to test their software, and had an episode where their database got invaded and they didn't even bother with a simple "sorry about that". Also, their service model has some stinky dark design patterns.