Product review (5 stars): Great cooktop - cooks and vents very well.
We bought this just before Thanksgiving 2017, so it's been more than 6 months now. It's a great cooktop. It gets hot quickly, it has good temperature control, and the downdraft is fantastic - that's definitely made a huge difference. The knobs are annoying, in that they're symmetric, so it's hard to tell at a glance whether one is on or not, but that's about the only complaint. It's been dependable and effective. The glass cooktop does take some maintenance to keep clean, but we use the Cerama Bryte Cooktop Cleaner, and it's been easy and does a great job. Highly recommended.