If you can swing the bill, buy the seafarer, it rides better in most conditions, they are similar in efficiency and the seafarer has more room. The 208 will have enough room for 3, but for 4 it will be cramped. The seafarer can fish 4, but no more. I know many feel safer with kids on the full transom seafarer, but I'm not sure it is that much safer, if the kids are on the fish boxes aft of the helm seats, they are just as close to getting out of the boat and in the water, but avoiding on possible worry may be worth it, that comes down to the boater. Boating with small kids is hard, you need to ALWAYS be watching them, having just 1 adult and 2 little kids is not going to be fun, you really need another adult or even a teenager to watch them while you drive, otherwise make sure one is seated at a helm chair and the other next to you, I'd keep them out of the cockpit when running unless an adult is with them, that is the most likely time for something to go wrong. Make sure they wear life jackets, in most states it is the law, and with little kids on board, it is just smart. Both boat models are great boats. If you will not be using the boat a ton, maybe a few weekends, the 208 may be enough, if you plan to sue it year round or a lot, go for the bigger boat. Also, if you plan to keep it in a marina, some charge by the ft others for the slips size, check that to see what the cost difference may be. Insurance and operation costs will be similar, maybe a slight more for the seafarer but not by much. Let us know what you decide and good luck!!