Gore-Tex is obviously my top recommendation, but many companies have come up with their own proprietary fabric that does the same thing. I used to only buy The North Face, Patagonia, Marmot, etc, but you don't need to buy those big name brands to get good rain gear. When I worked on Mount Washington we got free LL Bean gear and it worked great. This isn't a plug either, I get nothing from the deal. Although the stuff we got was their top end Gore-Tex line. I've had some good luck with REI jackets as well, they have kept me very dry.
If you find something online send me a link and I'd be glad to give you the pros and cons. Its important to know that when the humidity approaches 100% its hard for any jacket to keep you dry. Rain wont get into the fabric, but your sweat wont leave the inside either. Also, when it gets really warm it becomes a tossup of whether you want to be soaked by your sweat or the rain. I guess if you aren't working out its not a big deal, but something to consider.
Edit: Are you looking for a good winter jacket or more of a spring/fall jacket? Your best bet is to get a good water proof shell with no insulation that can be used in the spring and fall alone. During the winter or when it is colder wear another insulating jacket underneath. It gives you the most options for layering.