I am going to commit a heresy and suggest that you get brake shields. Unless you intend to race the car or otherwise push the limits, this will not harm the braking performance. We have had them on our cars for 20 years with no ill effect.
You are better off, I believe, sticking with the good stuff in terms of pads and rotors and controlling the dust with shields.
They are $30-40 per pair and can be purchased at dealers or the larger Euro part stores.
Falls Church VA
'86 300E 5 speed
'95 C220 (wife's car)
'98 Porsche Boxster
Past: '79 280E, '82 300D (18 yrs), '77 240D,