Restored in 4K and approved by Michael Mann, the director's cut of Thief looks incredibly beautiful on Blu-ray. In fact, the improvements in image quality are so dramatic that I feel very comfortable stating that those who have previously seen Thief only on the non-anamorphic R1 DVD MGM produced years ago will experience an entirely new film. The nighttime footage, in particular, looks spectacular. The flat and murky visuals from the DVD release are replaced by dark but lush visuals with some hugely atmospheric neon lights that give the film a very stylish neo-noir look.
Your review is mostly how you don't like the score. Anyway, as the reviewer is at pains to make clear, you haven't actually seen the movie.
When Criterion announced the release of Thief as a Blu-ray/DVD combo edition in early 2014, it was a major relief for fans tired of lackluster DVD transfer. The film had aired in HD in the same revised cut a handful of times, so the natural assumption would be that this would be the same source for the Blu-ray, too. Well, surprise! Though billed as a director's cut, this isn't the same version. The extra scene is still there, but thankfully the beach sequence is back to its original length with the music intact, thus creating the longest version we've had to date (about 30 seconds longer than the DVD) and something much closer to the theatrical version overall. The DTS-HD 5.1 track sounds excellent (optional English subs are also included), with the score benefiting in particular from the spacious presentation, while the transfer looks terrific with even the darkest scenes popping through far more clearly than before. It's safe to say you can toss your DVD in the trash bin after grabbing this one.
This is interesting. UK Arrow has a blu out of this title with two versions, the current director-approved one and the theatrical version. The theatrical version has a completely different color scheme (see Beaver's comparison caps: http://www.dvdbeaver.com/film4/blu-ray_reviews_60/thief_blu-ray.htm ). I like the new all-blue-all-the-time look of the film, but it's definitely good to also be able to get something resembling what the film actually looked like in the theater in 1981. I applaud this trend (if it IS a trend) and wish, wish, wish it would be applied to the films of a certain Italian filmmaker I admire.