The type of work you do makes all the difference... and I agree Chad... more protection is normally better. I have found that for the work I do, ACE is my choice. I like to be able to see what I'm doing. It allows me to read the heat base in the glass much better. I work small and I don't fume.
I own shade 3s and I have clip-ons as well. I do wear more protection if I work large pieces or fume much. It's good advise for sure.