I cooked professionally for about 10 years and have done quite a bit of research as well as practical testing. Here are some key points to consider:
1: Even if you dont cook a whole lot, get some good knives, they are safer, easier to maintain and will last a lifetime.
2. Even in the top names (Wustof, Henkels, etc) go for a forged knife rather than a stamped knife. The way to tell is the back of the blade by the handle (called the tang) is thicker. These knives are much more sturdy and durable.
3. DONT BUY GADGET KNIVES. A good simple set is an 8-10in chefs knife, a paring knife, a boning knife and a santuku. A serrated knife is also a must, but I usually buy inexpensive from the restaurant supply store as they tend to wear out.
4. Find someone to sharpen your knives. Stay away from any knife that "Never needs Sharpening" that means it was never sharp.
5. Always, Always, Always hand was your good knives. The dishwasher is death to good blades.
As for the best brands, I think Wustof and Henkels. I have had Wustofs for over 15 years and wouldn't trade them for anything. Really it is just a matter of what knife feels good to you.
Hope that helps