Interesting thread.
Firstly: I don't know that a rec player is going to be able to judge the speed of a hard court versus the speed of another hard court. *shrugs* I think these are pro level margins, and unless they're quite profound, the rec player may not have the ability to notice.
Personally, I seen most players roughly 3.5 and up notice the difference on the speed of different hard courts. On the other hand when it comes to something like strings I would agree that noticing difference between different poly's or multi's or whatever are "pro level margins." To me most polys feel very similar and most multis feel very similar.
Secondly: I would imagine that public courts, even semi-public courts, are probably slower than pro level Plexicushion/Plexipave surfaces. These surfaces are
expensive.
This in my experience is false. I have played on the USO courts including Arthur Ashe stadium and I have played on courts at the Miami masters and those are the top 2 slowest and bounciest hard courts I have played on. USO courts are a bit faster than Miami but USO courts are also bouncier than Miami to me. All the public Hard courts I have played on are faster than USO or Miami masters courts.
Thirdly: I don't imagine that a public court--perhaps just
slightly above painted asphalt--would get faster with age. If anything, the erosion of time would make the surface less perfect, and thusly slower.
I disagree with this too, as the court gets older, it actually becomes faster less bouncy. The ball also starts to skid more often as the court gets more beat down. They resurface the USO courts yearly and its always at its slowest and bounciest right after the resurfacing. After the indoor season the courts actually get a bit faster and less bouncy.
Finally: I want to see something hard and cold about the speed differences of these courts. Sure, we here players comment on the speeds, we here pundits talk about it, and we have a bunch of lays (me included) talking about it on forums, but: what are the facts? Does the ball lose 5% velocity do to friction on a fast court, and 15% on a slow court? Or is it more like 5% to 5.75%? Are the "fast courts" from yesteryear 1% faster or 50% faster? I've never seen objective data in a format I could really comprehend.
This is an interesting point. Would be good to find out. One thing I do know is that when I open up a new can of tennis balls they wear down much faster on the grainier hardcourts.