[fireant911]

look 171,
The warpage factor was quite interesting. I did some additional searches after you mentioned that and saw that some builders will not install 'plank-style' flooring (anything 4" or greater is considered 'plank'). Further, if plank material is utilized it should be glued as well as nailed to the floor. I discussed this with my wife and we opted for the 3-1/4" material.

john70t,
I thought long and hard about the visual Impression of the room in regards to flooring width juxtaposed against the size of the room. We might be able to use the larger material in the Master Bedroom but I had serious concerns about the two offices because their footprint is not big enough to visually support the wider material. This, too, I discussed with the wife and she agreed to the 3-1/4" material.

We already have 3-1/2" hardwood through the Living Room, hallways, and Kitchen (not our idea but the previous owners had that done). We 'suspect' that this flooring is Kempos - it is truly beautiful with the various shades but could not find who manufactured that wood so we decided to go with something radically different. We will get our quote early next week and have the material installed just before Thanksgiving. Thanks for your insight!