It would probably be a good idea to have them stain sections of the floor BEFORE it is sanded and finished but after it has been installed. I do this occassionally on certain types of jobs and floors. It will give you the truest idea of what the floor will really look like. It's better than staining up simple sample boards. It need not be a very large area. Then when you make your stain selection, the color samples are sanded off when the complete sanding process is started. I am not a fan of Minwax stains. They are inexpensive homeowner products marketed for the general public. I prefer stains used by pros, such as Dura Seal, Bona, and McCloskey's Tung Seal. Minwax dries poorly, IMO and is so thin that bleedback sometimes occurs. There are no quality waterbased stains for flooring. And we're talking stains here, NOT finishes, which are a different thing. And if the contractor is going to rip out and replace your floors, I am sure the distributor is picking up a big portion of that cost. No flooring contracting company can esaily afford to do that. You are probably better off with a "clear" grade. That will have the most uniform color naturally than any of the lesser grades. The NOFMA grading standards are the same as they always have been but to me, some mills' grading is shoddy and what is supposed to be select and better contains wood that is clearly #1 or #2. I see it occassionally so I'm pretty picky about which mills I buy flooring from. Not all are the same in terms of quality or grading, even though NOFMA mills are suppopsed to adhere to NOFMA grading standards. Here is a list of NOFMA member mills. Of this list, Stuart is my first choice, with Memphis and Cherrybark in second position. Some of the others I have not used and cannot comment on. The one time I tried Zickgraf, I was very disappointed and have never used it again. Some others that aren't here are Bruce (which I do not like either) and American Made brand of UNFINISHED flooring, which is very good as well but not a member of NOFMA. BLC is fine as well but just average, IMO. Here's the link to NOFMA's member mills:
http://www.nofma.org/Membership/Manufac ... fault.aspx
And a link to NOFMA'S grading standards:
http://www.nofma.org/CertificationGradi ... fault.aspx