If you're from the Seattle area, we recommend using Redmond Hardwood Floors. They are actually called Builders Interiors, owned by Ty Mortensen, he was on ABC extreme makeover back in 2006 as the lead tech.
From simple layouts to complex like you see in the "Cheese Factory" or the multi story food courts in the malls. Builders Interiors offers not only expertise installations, but have a line of hardwood to choose from. So check them out at www.buildersinteriors.com