I've seen one girl ever who did a CBJ and I didn't notice a difference. She literally said "Are you ready for the best blow job of your life?"
She wasn't lying at all. She's the first person to ever get me to pop in a condom.
I don't know what witchcraft she did, but it was absolutely insane!
In general BBBJ is infinitely better. However, every girl I've seen who did this regularly without even asking is long gone now.
There was Juliette from Flirt Finch, and Nadia from Pure. I guess Lynda is still around, but who needs all those teeth?!