I reviewed those two DVDs on my website.
Fort Bowie is widescreen, thank goodness (Encore Westerns runs it only in pan and scan) and the source print used is in excellent shape, but the transfer has TERRIBLE artifacting problems, with ghosting lines afflicting everything. It's a mess.
Fort Defiance is free of the ghosting but has a rash of white specks splashed across the top of the frame, especially on the left side, noticeable mostly against shots of the blue sky. They look like something that also crept in during the transfer, rather than something on the print. TCM ran this a few months ago and there were no white specks, it was a crystalline print.
It's a big disappointment; I was really looking forward to these DVDs.