Have already tried Speedcook several times with excellent results for both brownies and frozen breaded fish.  Preheating is not required and cook time is significantly shorter, so time and energy are saved.  Plus the house doesn’t get heated up.  Also using custom cook settings for regularly cooked items (e.g., oatmeal), and this is handy.  Basic MW functions work well.  Inner lamp brightness is MUCH better than prior model.  As noted in title, the underside had a small dent.  Since it is generally out of sight, and we didn’t want to hassle with return and re-delivery, particularly during COVID-19 shelter-in-place, we just kept it, and it hasn’t bothered us.  Overall, recommended.