I haven't, but the MWDA novels were all published by ROC, so perhaps they might be ok? You can send a free sample to your kindle for the book that you want, if there are any glaring issues with it, then you'll most likely see them in the sample.
There have been some issues with the CGL epubs, but I think they have gotten way better over time. Before they had to pull them down, the last couple that I picked up looks pretty good. There were still errors, but I've seen more errors in ebooks from big publishing companies. Perhaps when they get the go ahead to put them back online they'll give them an edit before they do.