I'm so glad to have knobs gone gone gone.  It's so much easier to clean without them.  The two large elements are adjustable to three different sizes adding a great deal of usefulness.  Syncing two smaller burners for a griddle is great and I was surprised that a griddle came with the cooktop.  In addition to doing a great job cooking it is a pretty cooktop complete with a beveled edge.  With a glass cooktop it is necessary to clean frequently and that may be a negative but for me worth it.