The absolute best I've found in the $100 price point (okay, maybe $110) that are also waterproof is the Leupold Yosemite. They're not quite the power you're looking for (8x30), but they are so clear and bright I find that it hardly matters. Also they are very compact, which I love when I'm hiking or paddling with them. Honestly, I haven't found any waterproof 10x binoculars in the $100 range that I would be happy with. They tend to be too dark or just poor quality. If you're coming from a 10x25 setup, I think you'd be impressed by an 8x40. 10x25 magnifies, yes, but doesn't let enough light in.

The Yosemite can be found at many national chain stores, so it should be easy to put your hands on a pair before buying, which is always a good idea with optics. In my region, Dick's Sporting Goods always has them in stock. Cabelas also carries them if you're lucky enough to be near one of those.