Fiberglass will add weight, but will last longer. If you are in a harsh enviornment where you boat 12 months out of the year, fiberglass will last longer if you take care of it. A soft top will require new canvas after a few seasons, in a less harsh enviornment it will last longer. Both are good options and a great addition to a boat so you really cannot go wrong with either option. I see you stated it is an out of state firm, is it Atlantic Towers? ...I know some guys like their work but I have heard a lot of negatives as well. Having a top built for a boat and done without the boat on site is not the best option. Your best quality tops will be done on site and welded as they are secured to the boat. If the top is prefabbed, it may not fit 100% correctly and may need to be forced into place. Over time it may cause cracks and stress the mounting locations. I know Grady makes a production boat, but there is a given amount of play within the specs, as well as from a prefabbed manufacturer. If you are spending a good amount of money you want it to last. I know any top is better then no top but just figured I would give you a heads up about a premade T-Top.