From somebody who bought the US Blu copy, this is worth picking up. Sure, Besson has employed some rather obnoxious techniques to "freshen up" the image, but this is the way he wants it to look, and won't be issued otherwise. Subjectively, it looks great, with a robust audio mix, and to pick it up for under £6 is a good way to spend such money.
For anyone bothered by the fact that the US edition has the audio encoded at 96 rather than 48, it makes just about sod all difference in the real world.