This whole filter talk is just crazines... Like a previous poster, I have been smoking over 30 years and never even heard of filters for joints before this post...
I personally prefer my Dugout and one-hitter. You don't waste all that weed going up in smoke between hits.
A "roach" is the end/butt of a rolled joint in these parts. And if the j is rolled well, that butt is dark brown in the middle fading to lighter brown on the edges and actually does remarkably resemble a small cockroch from even a few inches away - hence the name "roach".
People were referring to "wasting" weed by not using a filter... this is also craziness. When it is small you put it out, and usually put it somewhere to smoke later with other roaches.
Roaches can be a godsend when you run out of weed and find one hidden under some ashes in an ashtray, or when you come across one you forgot you put there because you were too high...!
If you use a tip because you are concerned about smoking with other people, then who the hell are you hanging with...?! Though I do have to admit I have known a smoker or two who just couldn't keep from slobbering. They are usually amatures who just need a little guidance to correctly hit it. But with a well rolled joint, the joint shouldn't even touch your lips when hitting it.
Enough said from me. In my opinion, filters are for rookies who old school smokers like myself point and laugh at.