They have a great website, really responsive people you can call by phone, and are the fastest to ship items in the kitchen/bath space, and they have some designers that they seem to be the only US online vendor.
I am building a home and have ordered from most major online stores for faucets, baths, sinks, toilets etc. They have the best selection, often the best prices (esp. If you catch a sale), and unbeatable customer service for returns, changes of shipping location, etc. It is not worth the hassle to save a few dollars at buying from other sites, dealing with slow shipping (one site took more than a month to ship an item that they told me was in stock) and other pitfalls.