Firstly I have seen this film several times now and this was the first time I had seen it on the BluRay, the film itself is an awesome classic with the cliches in film that are now almost standard in the slasher genre. The only down side to the BluRay was that it is so clear and excellent quality that the Tom Savini practical effects lose some of their impact as the transfer is so clear, you can see the flaws. This was a disappointment as the practical effects in this film are awesome and seeing them for the first time must have been fantastic.
I love these films as genre and a piece of cinema history, while there are far to many of them they define an era and started a genre. The sequels to this original go to far and in a strange direction and the original film in the series set a mark that was hard to beat. The only issue I have with the film and slight spoilers there is that the killer is never seen in the film until the end, so as a murder mystery which some people regard this, it is hard to go with as the killer is unseen.
I would recommend that as a film fan you see the original anyway, the sequels can probably be missed but the original is a 5 star film that is worth watching, also you get to see a young Kevin Bacon which is pretty cool.