If you after a full face helmet I have the Shark RSI and have found it very quiet and absolutaly fine in the rain. Especially if you wear a neck warmer as well I have found wind noise perfectly acceptable even on a naked bike (most wind noise on it comes from under the helmet).

http://www.aye-gee.co.uk/index.php?cPath=89_111_142

review of it here http://www.webbikeworld.com/r2/motor...met/shark-rsi/