Have to deduct 1 star as it seems others had the same issue with disc printing errors. My initial copy had one disc with a defect in the disc's reflective layer. However, I replaced it with no issue and the new copy was fine. Not entirely surprising in a nearly 50 disc collection, so just check them before the exchange window closes.
The collection is a nice complete set of all the episodes and bonus features. Picture quality is excellent, and no issues with sound either.
The physical collection itself is well presented, with a bonus 'special features' disc in a card sleeve - take that as you will. The bonus booklet that comes with it is mostly an episode guide with some pictures from the series.
If you are looking for the die-hard collectors' set like some shows get, this isn't quite it. But for what it is...a complete series housed nicely together, it's great. Pricing is ok, pre-order pricing around $280 was better. At the current $360, you're paying $24/season on Bluray. Fair, but not a great deal per se.