Advantech Flooring Tips Video
The claim to fame for this particular product deals with swelling. In the past when I installed OSB, it could swell if it got wet and it won't come back down to its original shape. But this product will be as smooth as the day it was installed.
Even with a quarter-inch of water standing on it, if we came back tomorrow, it would still be flat. No swelling, no nothing. Really neat. So if you are going to do an OSB subfloor system, be sure you use a product like this.