Mark,
A well reasoned post. Thank you!

> Are you saying that K&Ns must filter smaller particles than paper
> filters or they are no good?

No. But that has been the claim in several posts.

>How did this become the issue?

Who knows how any of the issues on the list become what they become :)....
but seriously, certainly the number and size of particles passed through the
filter is a significant factor... after all, that is the purpose of the air
filter.... filtering!

>The standard
> I use for products to replace my current ones are do the benefits from
> switching outweigh the costs of switching.

This is a very good point and I'd love to read any cost-benefit data that
can be provided. But, again, the K&N marketing seems to fall short in this
department to... they seem to favor theory and hype rather than actual data.

Bill

Bill