Not sure if I understand the question on the 805 stands.
I have the 805 Signatures and just got my stands last week and I can only tell you that it makes a major difference in the quality of sound. The stands added more natural bass and even my dealer was impressed. There is a difference in bass from the Natalus to the Signature. I my self would not spend more my on a Sub until I heard the 805's on stands in my home. I would go with the 805 stands not a subsitute.
I am on carpet so I really cannot comment on the hardwood floor issue.
I have the 805 Signatures and just got my stands last week and I can only tell you that it makes a major difference in the quality of sound. The stands added more natural bass and even my dealer was impressed. There is a difference in bass from the Natalus to the Signature. I my self would not spend more my on a Sub until I heard the 805's on stands in my home. I would go with the 805 stands not a subsitute.
I am on carpet so I really cannot comment on the hardwood floor issue.