Movie is fantastic, watch it asap. This review is primarily for this US Blu-ray release.
Be warned that there is a bit of a controversy regarding the subtitles on this release. Due to the fact that both Korean and Japanese are spoken throughout the entirety of the film, in the theatrical release these two different languages were differentiated by the use of color. Korean was in White and Japanese in yellow. This is important because at some points in the film it is important to know what language is being spoken (at least for those of use that only speak English). For whatever asinine reason, Sony and Mongrel Media have decided to completely get rid of any indication as to what language is being spoken.
For those wanting the color coded subtitles present in the original theatrical US release check out the Canadian Blu-ray. It's Region A, has colored subtitles, and even sports slightly better picture quality.