Ok, I needed the practise.........so......this is how I've ranked the columbus steels.

If they're not spot on, they're close enough

Columbus Neuron ranks in the middle somewhere, based on weight, and wall thickness.
It looks like it's got Nivacrom main tubes and Cyclex stays, with slightly thicker down tube walls than the other Nivacrom steels.

Columbus Spirit (niobium)
Columbus Life (niobium)
Columbus Ultrafoco (thermacrom)
Columbus Foco (thermacrom)
Columbus Nemo (nivacrom)
Columbus Genius (nivacrom)
Columbus Max (nivacrom)
Columbus Zona (nivacrom)
Columbus Cyber (nivacrom/cyclex)
Columbus Neuron (nivacrom/cyclex)
Columbus PRX (cyclex)
Columbus SLX (cyclex)
Columbus SL (cyclex)
Columbus SPX (cyclex)
Columbus Brain (cyclex/cro-mo)
Columbus Thron (cro-mo)
Columbus Gara (cro-mo)
Columbus Alle (cro-mo)

http://www.ceeway.com/Columbus-Tubing.htm
http://www.kvanproductions.com/cycling/Neuron.htm


Is this for the Kennedy frame?