I used meg's 105/205 combo and it worked fine.

For light-med work though, Meg's "PlastX" worked pretty well with a drill attachment & buffing pad. The Porter Cable is a little too big if you're using a 7" pad.

also:

yea the 7" and even the 6" is too big for our headlights.

just be careful when using sandpaper, 2000 grit is good but dont do it too many times. it'll eat through the clear coat eventually, and the haze will come back sooner the next time around