I ended up buying my Marquette from Midwest Supplies; they did just fine. I lost 2/30 but that was due to extreme weather and rabbits, not the stock.
All of my other vines came from Double A. I've never had one fail to take. But I will say, double check that you get that confirmation email on your order. I ordered my Marquette there in a December but was busy and forgot to check for the confirmation email...everything appeared to process fine....come spring no vines, they had no record of order and I was out of luck and had to scramble to get them from Midwest.