Comparing Water-Saving Aerators

I had a short discussion with some friends regarding aerators over the Holidays. It seems that everybody has some concerns as to which type would be best suited to there situation. If you find yourself with the same situation, please read this short article at http://www.squidoo.com/aerator-on-off on the installation and comparison between the manual on/off aerator and the instant-off aerator. I would certainly be interested in reading your opinion regarding the two types.