I have installed about 1000 sq ft of Bruce Hardwood, a subsidiary of Armstrong. With any natural product, you are bound to get variations, so allow for 10% waste. With this in mind, variations are fine, but poor milling is another. Ranging from non-square end cuts, tapered slats and tongues, these sections are unusable, unless you recut them yourself. This definitely slows down the installation time. Overall, Bruce is a good product is readily available.