I installed the window relay from shark racing and really like it.
The main features are:
-1 touch up and down on all four windows
-when all four windows are down, one quick pull on the driver and front passenger buttons and all four windows roll up
-remote control: When out of the car, lock the car and all the windows roll up, unlock-lock-unlock and the windows roll down
-when you open the driver door, the windows cracks open, when you shut the door, the windows closes. I'm told that this is a fancy-pants feature that is found on luxury cars to equalize the pressure in the car...not sure if it's true but I'll take it.
The relay is especially handy for me because I have the 5 speed and it's nice to have the one touch so I can shift uninterrupted. The install was pretty straight forward except there are two gray wires in the door panel and there are no directions telling you how to distinguish the two. In my case, the smaller diameter (higher gauge) gray wire was the ticket. Total install time (assuming no catastrophes) is about 45 minutes. Just make sure you disconnect the negative wire from the battery terminal...I accidentally ran a hot wire across the body metal and blew the multi-fuse. This thing is $40 and can only be purchased from a dealership/OEM supplier. The parts department didn't even know what this thing was or looked liked so I was a little worried that I ordered the wrong part but everything worked out.