Bought the I-R 7.5 HP compressor. I am familiar with Tractor Supply and checked their price online but they do not have a store near where I now live. Bought it from local I-R dealer for a little more money. Hooked it up Wednesday. It's no quieter than my 5 HP but not bad and pumps a lot of air. Wil give it a real test on my sand blaster rig this weekend.