Summary: I purchased this because my 276C stop working. I purchased a Garmin 620 but you can not see the screen in direct sun light. If your in a cabin with the 620 it would work great. The 376C is easy to use and with the Ram mounts that are available you can mount it about any where.
Summary: Very versatile GPS, currently own a 276C that is mounted on my motorcycle, cracked the screen so got the 376C. I use it for road routing mostly but I do like the tide table feature, wife and I go tide pooling along the coast.
Summary: I bought this to replace my GPSMap 182c. I was able to take out my bluechart chip, connect it with my GSD 20, and even use the existing wiring in my boat. It was an easy install and the portability is great.
Summary: Having become familiar with Garmin products in aviation, I found the 376C to be extremely easy to use with user friendly menu-driven functions. While not perfect, the unit's database will get you where you want to go everytime...which takes the stress out of city travel.
Summary: This is my third Garmin GPS. The other brands are either harder to use or missing features. I love the XM radio and XM Weather. It's very waterproof. I use it on the motorcycle in the driving rain without any problem.