When I built up my Vamoots in June, I purchased the Campy Chorus 11 groupset. The Record was 50% ($550) more. After doing some reading, I read that some were suggesting that the Super Record crankset be substituted as it due to the CULT bearing system. I ended up doing this, and also getting CULT hub bearings for my Campy EURUS wheels. Here is an interesting article/newsletter (see page 5)
http://www.schaeffler.com/remotemedi...0901_de_en.pdf
They are claiming better durability than standard bearings with their Cronitect steel cups and races. Who knows if this is true, but it appears to be something different. As to decreased rolling resistance, even if present, would have little or no effect for most of us. As another poster mentioned, it makes you feel good. I had been planning on doing a Record groupset, but feel that my hybrid, which cost the same after selling my new Chorus crankset, is technically more interesting to me. Also, as I am 62 YO, this titanium build will be the last one I plan on doing, so I wanted it to be a little unique and interesting with out going way out there.