I just read up on this. It seems like the plus is that they do let in more air but on the downside also mre dust. It seems like the amount of dust is almost negligible though. Another huge plus is these things are lifetime. You won't ever have to get another filter again. Just wash reoil and reuse. I ordered one from ************************ so we'll see how it goes.

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W126 1983 300SD 286,000 miles and ticking
Baby blue exterior Grey MB tex
Recent work:
Replaced air cleaner mounting brackets and heat shields
Replaced alternator, fan and power steering belts
Replaced positive battery terminal
Replaced negative battery terminal and cord
New Duralast Battery

My car needs work.