Typhoon Lagoon is my favorite. I LOVE the shark reef, the wave pool, the tropical feel of the park. It doesn’t feel like a water park to me at all. My teenagers prefer Blizzard Beach. They love Summit Plummet and Downhill Double Dipper. I also think that BB has more for the 5 to 12 year old age range. Teamboat Springs is also way better than Gangplank Falls at TL.
Both parks are fun and wonderfully themed. It just depends on what you are looking for. If it a nice relaxed day away from the 4 major parks I would pick Typhoon. If you looking for thrills, try Blizzard Beach.