In this thread I vowed never to deal with Siege again. My friends dad loved the new horns though and wants a set. I passed on the site sponsor because of poor quality audio samples, but in searching the forums it sounds like they are supposed to be great quality kits and friendly support. Who here has some good audio/video of their Trainhorn kits?? Also after looking at their setups it looks like most of them operate around 130psi. (edit: I can't read very well. I see 150-160psi) The kit I have operates between 165-200psi so why the much lower pressure?? I know he'll be disappointed if I put a kit on his truck and they aren't as loud as mine. I'm trying to convince myself that I should have gone with Trainhorn.org and basing my decision on sound clip quality was a poor one, help me out here!!!