Are you asking about bad reviews on the 276 or Nuvi. I would give the highest of reviews to the 276 and poor reviews to the Nuvi. The 276 is a lot more capable of handling 3rd party maps but again it is all about the application. If a persons riding is about following designated trails like one would do in an automobile or motorcycle on a highway or city street and they can put the trail map on a Nuvi then it would work great for that application. In my world of back country riding where I only use a designated trail to get me to the mountains where navigation, collection of waypoints, editing of tracks and topo information is extremely important the 276 and Montana series shine. I gave the Nuvi a good trial and not being able to trackback and display my collection of waypoints, I sent it back and went to the 276. The 276 was out years ago and discontinued, Garmin brought it back newer and meaner then the original.