Haven't use the grind function yet, finishing ground coffee.  All other options, program start, keep warm setting, work great.  This is our third Grind and Brew.  Previous ones have lasted several years each, making coffee every day and keeping coffee hot for many hours, mostly with grinding.  As they age they take longer to make a pot, even after vinegar cleaning and the last one had a grinder motor bearing freeze after three years and later began leaking a little water during brew (with pre-ground coffee).  I'd say that's really good service.