I'm in the market for one.
And since it'll be at least 3 months till I get one, I'd like a little insight on the best ones I can get.
Money is not a problem here.
http://www.newegg.com/Product/Product.aspx?Item=N82E16833106033Best for what? Chances are that whatever you upgrade to won't get you much better performance, unless your current adapter just sucks. For most people, I'd recommend something simple but good, such as this:
That will is perfect for pretty much everything you can possibly be doing at home.
Unless you're asking about a USB LAN or wifi adapters?