I fish the Curado 300E in Saltwater almost weekly. My fishing partner and my Father-in-law also fish these reels in saltwater regularly. They stand up to beatings and stay very smooth and reliable. Now, that being said we do alot more maintenance on them after being in the saltwater than if we were using them in fresh. I believe out of the last 5 years and the 7 reels between all of us only 2 have gone 2 back to the factory for service......Can't go wrong with Shimano's warranties either.