Especially for piers, I love the 30# braid in a baitcaster like the 6500C. It will give you the rub resistance you need. Only issue to worry about is height about water, some piers can be 100' above water level and you will definitely want to tie on a leader. The 6500C is perfect for vertical fishing.
For jetty fishing, I prefer a spinning reel. It will cast better without having to spin the reel during the cast, so you will get farther and without any birdnests with a wide choice of bait weights. Spinning reel sizes vary and you will need one based on what you want to do. I like Okuma Coronado reels Bass Pro carries. Not too expensive and great saltwater reels. You can get one sized for what you want. Some like to surf fish and others are looking for a more active cast and retrieve pattern.
Capt. Craig Copeland
2013 Nautic Star 2110 Shallow Bay Boat
Nautic Star Boats Pro Staff (nauticstarboats.com)
Redneck Fish'n Jigs Pro Staff (redneckfishn.com)