Hey Rich... I use f8 often myself & would be bummed with visible dust in my photos.
I didn't mention a blower in my response so I'm not sure what you mean. Currently, I only use the Copperhill solution with Pec-Pad(s) and this method has been effective on my D100, D200, & D7000. I have since (well just today) ordered a loupe and the Arctic Butterfly to clean the new D600 & my beloved D7000 and hopefully avoid some wet-cleanings.
I have looked at the Firefly and was favorably impressed with its technology but the tri-pod requirement or an assistance holding the camera didn't work for me.