GREAT NEWS FOR COMPARISON
Neu just released a 1400 series of motors that are 36mm in diameter. This will put the Neu quality against Medusa's. All that's on the page is 3 motors with very limited specs. Once more motors are made and more information is released, we can finally know which is better.
Yes, the 1500 series Neu's will still be better then 36mm medusas due to the diameter.
Link to the Neu 1400 series motors -
http://www.neumotors.com/2008/Root/S...00_series.html