In reply to Denni:
Hi, Yep I have one and and I had a very old Neutrino before that.
Id say the Electron is as warm if not warmer, though that could be because the newer jacket fits me a lot better.
It was plenty warm enough living in Colorado over last winter and its great as a belay jacket, huge pockets high up, good hood, really lofty, seems fairly water repellent (though I use a synthetic when things are damp), looks great, really nice cuffs though if you keep gloves on all the time they might be annoying, really smooth running zips that don't snag much, and it packs down surprisingly small.
Hope that helps, Ive not regretted buying mine!