yea, I would like to get the icebox as well, but it's so pricey. supposedly you won't have to worry about hydrolock as much... but you sacrifice some power (as explained in surfer's article).
personally I would go icebox if I had the $ and if I was you. why? mmmm, it's a little different (not as many people with it) and you shouldn't have to worry as much about certain things (avoiding debate), and it will be quieter if you don't want the LOUD intake. yet you should still see some gains! sounds like a win win win win win situation.