I've seen it before, but was flicking through parts of it as I found it quite disturbing to watch for some reason tonight, think it might be the loudness of the screams.
The remake lacks actual tension IMO; it's filled with heavy music and the sound of the chainsaw all the way through, which takes away what the original had - the original was blunt, it had the right camera angles and sound, it was like being sat in the house with them. The remake is just like the rest of the poor slasher "horror" films out today.