Steve, what barlow are you using?
I never thought about barlow on my Brandon 16mm, I just use a 6.7mm EP for highest power in some of my scopes. I'll have to give that a try on Saturn next time out.
I'm actually using (3) different barlows, all of which do not degrade the image and retain the high-contrast of the Brandon's. If I had to choose a favorite, it would be the Orion Trimag. The TV 3x is also very nice.
I find these barlowed Brandon's to be better than my Pentax XW's.