When I came into Tennis, Luxilon was already here, and the pros were already using it. I did some searching, and can't come up with much of this info on the boards and web. When did Luxilon become start to creep into the market? Were there other polys before it? If so, did the pros start using these other polys and gravitate toward Luxilon, or were these other 1st generations (Polylon, Enduro, Kirsch et al.) the result of Luxilon's technology being copied? Lastly, is the progress of the poly string (1st generation, 2nd, 3rd etc) only aimed at improving the playing characteristics desirable to the consumer market, instead of what the pros desire? For example, the reason Joe NTRP 4.5 buys Black5Edge is because it's playable for 6 hours, is easier on his arm when his form breaks down a bit, and is less money than Luxilon--professionals aren't concerned with any of this. Is this the gist of it, or is there more to it? Thanks.