We just installed this new cooktop and chose it because it has knobs.  I did not give 5 stars because the right front corner does not sit flush with the countertop due to an underneath bracket sitting out more than the other two brackets.  I can tell I’m going to be using a knife to clean out junk that collects between the countertop and the cooktop.  I noticed another review with the same issue. If we cut out more of the countertop to accommodate  the bracket I think we’d end up with a gap and that I could not live with.  I wish I could find a stainless trim kit that would work.