cold air intakes

First mod! I've read a lot of things on the Internet and for the most part all of these brands gets the job done when it comes to the cold air intake. But I wanna know if anyone has experienced with those brands did dyno test

i have another question:shop out here told me that it was a bad idea to get a cold air intake because our street floods when it rains sometimes, it doesnt really very often but when it does our strret tend to flood...am i going to have a lot of problems with it in the rain?