This is a nice Traviata, and yes the singing is great. Merrill's big aria in Act 2 is really splendid--about the best I've heard. Sutherland is really something in Act 1, giving an impressive lesson in virtuoso bel canto singing. I have not heard another "Sempre libera" that matches this. Her singing in the last act, which is quite the tear-jerker, is very affecting. Overall, this is a compelling Traviata.
However, I am one of those souls who think diction in opera matters. The difference between Dame Joan's diction and the men's is jarring. Every time Sutherland is singing a scene with either Bergonzi or Merrill, her singing is basically a bunch of aws, ohs, and ahs, while the gentlemen enunciate splendidly, especially Bergonzi. If you don't mind this sort of thing, then by all means buy this Traviata. If you want to understand the words, look elsewhere. Callas and Moffo are both excellent.