Ahh yes, Detonation Films - one of the several free, high quality sites I referenced in
http://www.videoforums.co.uk/user-vi...ounds-etc.html 
Okay, sorry, I couldn't resist - I tried to share a bunch of the better resources I've found, and no one ever replied to the post! Oh, and no affiliation by the way. I encourage everyone to check out a few of these sites if you haven't already.