Its pretty funny but you all have been in a different range of speed bows than I was. I found that speed wasn't everything when speeds breaking 300 fps was the thing. Now when speed is reaching 366 fps its too fast. You'll find that the more you shoot archery the less the need super speed. Especialy when your talking acuracy. Low brace hieghts and high speeds are alot more unstable than high brace height lower speed bows.
So you shoot for something in the middle. Of course the shootable bows of years ago aren't as fast as the ones today. I think how they have done that is shoot for speed and learn to make it shootable.
But lets face it speed has somehow become the driving force in bow sales. I guess because of people want to brag they have the newest thing and its better than everyone elses.