Just unboxed a new-to-me RER Arroyo 54". It's my first "performance" bow, if you will, and just from the first few shots I'm quite impressed. I'm not into chrono's and all that, but from shooting around other people I know my other bows were not slowpokes, but this thing has some unreal snap and cast. Nearly longbow quiet and zero shock, with a very smooth draw for such a short bow.
I'm working up some arrows that should be a good fit (thanks Shawn for the recipe) and will give a better report soon.