So will someone school me on these CAI intakes. I'm leaning more towards r&d but I'm seeing that R&D makes three options

1) Drop in filter

2) air filter that replaces oem air box but still retains stock intake tube that connects to blower inlet

3) a true cold air that replaces the entire intake system.

What is the best option? Is the difference noticeable between the three? I don't want to be pulling water in the motor as I like to do some pretty tight carving to the point water comes crashing over the handle bars.
but I am looking for a performance gain.

Any help would be great.

Thank you.