In reply to Oscar: Do you mean the Redpoint Optimus? I think TNF use optimus to mean hooded - there is just a Redpoint with no hood, and then a something-else Optimus which is down.
I have the Redpoint Optimus - its done pretty good service although I don't think it's got the best hood.
You can probably take an educated guess at relative warmth of the two jackets by looking at the amount of insulation - TNF says: 100 g PrimaLoft® One
http://eu.thenorthface.com/tnf-eu-en/men-s-redpoint-optimus-jacket-2.html?c... Montane says the Prism is 40g per metre so its a much lighter jacket. I'd have a look at the RAB photon jacket. Slightly heavier insulation than the Redpoint (so a little warmer I guess) but a much better hood. I reviewed a slightly older version of the RAB
http://www.ukclimbing.com/gear/review.php?id=2685 and really liked it - they've just added a touch more primaloft since then.