I have a the UNI and I like it. I don't think you can go wrong with either the UNI or the K&N. IMO some folks tend to over oil the UNI which can cause problems with oil being sucked into the carbs. A light even coat is all that's needed. I then dab the inside of the filter with a clean paper shop towel. This will insure that all the excess oil is gone. I've had no issues and the bike performs great. The K&N has a great reputation and allows good airflow.
Air filters are critical to the life and performance of your engine. The more airflow usually means more dirt particles. The dirt particles are not only bad for your carbs but they also make your oil dirty sooner as well. This can eventualy lead to pre-mature engine wear. IMO you have to find a happy medium between performance and filtration. Every test I've seen shows that OEM paper filters offer the best filtration but the worst airflow. UNI is somewhere in the middle and K&N has the best air flow.
Last edited by fishercat; 01/31/2006 10:48 PM.