Just spoke with the race suit tech at Vanson Leathers in Fall River Mass. He basically stated that the suit will degrade VERY little based on age alone. As long as the suit was dry, conditioned, and stored inside in a dry environment out of the sunlight, it should be perfectly fine. It is important to make sure the leather is soft to the touch, still very flexible, and not cracking. The stitching should not show any signs of fraying or wear. Any damage to the suit must be carefully examined for proper repair.
Regarding the floating armor vs non floating armor, the major difference seems to be the extra range of motion with the floating armor as the armor is attached to the liner rather than solidly fastened to the suit leather itself. The farther the arm/leg/hip extension from the normal designed range of motion, the more comfortable the suit will feel if it has floating armor.
The seller is pretty cool about it. I can return the suit, no questions asked, if it doesn't work for me for any reason. I do like the fact that Vanson services their stuff, and being in the northeast I can see them in person at will. I need to head that way in 3 weeks regardless on another mission anyway. If I get the suit, I will bring it directly to them in person, have them look it over, and decide whether to keep it or not.
George