Yes, it's a good film ( I have all four Omen films, this includes #4 which was a tv movie) But the Blu Ray doesn't really enhance the picture quality, there is a small difference (slighty sharper but not enough to really notice)
That said, for the price above, it's worth it for the extras ( like the music only soundtrack)
If you already have it in Standard def. You need to seriously consider if it's worth paying out again.