Well, I have done over 100 shops for them in the last two years, and I have a shopper rating of 10, so I assume the schedulers know me too. I will note that I DO get shops scheduled within hours, sometimes. I have no problem with getting quick scheduling most of the time. So that is nice.
But as I noted before, there have been times when the shop gets denied even though it is still on the board, without any explanation, and I have come to find out it is because that date is not actually available. That is a pet peeve of mine, when dates show availability even when they are not.
And then their responses to my emails are slower than I would prefer. It's not terrible, but it is such a big difference compared to the scheduler they had when I started. She was so friendly and responsive.
So, overall, yes, Jack Network is still an MSC that I like to work with a lot. But to @dfwfairy's point, I did notice a difference when Acculocity took over.