Looking for a good reel for my bass bait fishing light enough for my rod but tough enough for the task. I have been using my aerlex 7000 which is great for casting but a bit of a lump. Looking for something a bit smaller but I am confused by the codes. So what is the difference between XSA, XSB, XTA,XTB,XTC,XSC all mean ? Are they all useable for sea fishing and what size makes sense, I was thinking 5500 ?