I also use Black Diamond for the same reason.REEFLECTIONS said:black diamond.... i just can't bring myself to spend alot on carbon. some people but the designer german stuff for a ton of money... but i'd have to see a study that shows a difference before i could spend more than neccessary
Phyl said:will make your head spin. Not sure I've found the ultimate answer though.
malulu said:just make sure to change them everything 2 weeks or so. (or take it out after 2 weeks, when no new refill were available yet...)