My two cents on the subject...I liked the area at Blizzard Beach better because it was pretty much all in view from the seating area. Depending on the ages of your kids, if you let them play while you are just watching them, the Blizzard Beach area was better. At TL, the kids area was very pretty but also very spread out and there was no place to just sit while they played and still be able to keep them in view. TL had lots of twists and turns where your little ones could easily be out of your sight. SO unless you plan on following them around and sticking right by their sides, I would tell you BB is better.
Boy, as I read this I sound like one lazy mom!!! But I know that there are others out there that like to stretch out on the lounge chair while the kids splash around, right?! But I am very lucky that I have older kids that love to play with my little one, so as long as I can see them at all times, then I am comfortable letting them splash around with me not right on top of them. It seemed every time at TL that I would get settled in a nice shady spot, they would want to move around the corner! Oh well! They are both very nice areas and your kids will enjoy either one.