I have both and like both. Doug is cheery and motivational but sometimes a little too chatty without content. Vinnie is pretty laid back but more focused on the task at hand. I think both production values are excellent but I give the nod slightly to Vinnie for editing and packing in lots of material. Doug's body of work is extensive and has both lick focused content as well as longer complete runs. Vinnie sticks to the licks. There is some duplicated material but I think that is to be expected. I think Doug and Vinnie's video's complement one another pretty well.
I'd like to see a time bookmark in Vinnie's tabs to let me jump to a specific tab. Trying to fast forward through 98 tabs is a pain. He may have this info somewhere and I'm missing it.
Hope that helped.