Bonez vs. K&N

ok this caught my attention when it said "The Bönez Performance Air intake uses a high flowing filter that flows better than the K&N kit and is servicable" and "the best performance air intake system available for the 2nd generation RX-7" so I know you can't always trust what they say so I thought 'what better than to ask my fellow rx7 owners' so anyways, does anyone know anything about this intake or how it really performs? the cost($100) is also almost double a K&N filter so who knows...

http://rx7.com/cgi-local/2catalog.cgi?cat=7&part=100

looks like the perfect intake for custom piping and cold air box if it is as good as they say

edit: how much of a difference do those fresh air headlight covers make? they worth $150 bucks?