I'm late to the game here, but so be it. I'll start by saying you have to admire Edgar Wright's runaway imagination and style. The guy always goes for it and the way he marries music and image in Baby Driver feels a step beyond where others have dared to tread; matching music beats meticulously with action in long one-shots. Sneaking lyrics into background graffiti as they pass, etc, etc. He uses so many songs in the soundtrack and yet I never felt overloaded. You can tell very choice was made with pride and carefully considered, much like a Tarantino piece and un-like a gratuitous, clueless dump of music like Suicide Squad.
Wright's biggest triumph may be the casting of Ansel Elgort as Baby. The kid has an embarrassing amount of charisma and southern charm to burn. I can imagine someone falling in love with Baby the way I love The Dude and returning to this movie again and again as a result. I'll say I was moderately sad that Baby wasn't able to keep his figurative hands completely clean. A more significant disappointment; Kevin Spacey's Doc feels way too surface level and like any other paint-by-numbers Spacey villain until we get a small turn at the end.
In short, if you love a high-paced chase film and can stomach a lot of stiff language, this is absolutely the movie for you. You're going to have a blast. It may be a bit thin on story, but it is masterful in style, pacing, and fun.
The blu ray? Looks fantastic, sounds fantastic, and has a very healthy dose of special features to dig through.