"French doors on ovens tend to be the most ergonomic option for one main reason - the length of the drop-down door pushes the user so far away from the oven cavity.  It gets worse on a double oven configuration where - I would argue - the French door version is borderline a necessity on the upper oven.  On this countertop oven, they are clearly trying to take design cues from the commercial ovens.  The benefit there is minimal at best."