I don't know how many of the Silverline titles use a watermark but I have read that at least some don't so I expect most or all don't. As far as quality, I don't own any of the From the Front Row Live series but concluded all are awful from what I have read. I also believe the majority of the titles obtained through the Sanctuary deal are awful with some exceptions because Sanctuary provided nothing for Silverline to work with in most cases. The Mavericks, Dar Williams, Widespread Panic, B.J. Cole, Pere Ubu, Brimstone Butterfly, Dishwalla, Ziroq, Jane Monheit, Big Phat Band, and a few other artists are all well served on one of the 5.1 Entertainment Group labels in my opinion, Silverline, Immergent and Myutopia. I must have about thirty 5.1 Entertainment Group titles I like and are all part of my regular rotation, meaning played once or twice a year on average.
Chris