The Nuvi can not hold any more waypoints in it than any other GPSr (1000 for my 255w). You can only put 1000's of points on them as points of interest. There is a good chance that even the Lowrance models mentioned in the newsletter will take unlimited (well, limited to external card memory) caches as POIs.

But it seems dumb to load caches into a GPSr as POIs when it has ability for caches, and that cache memory is limited. I've been asking this question for years now.

The Lowrance models are neat in the fact you can filter by cache type/size and d/t. Maybe by the 20th year anniversary they will get the cache storage limit fixed!