I have always been told straight cut gears aren't something you want to daily. No because of the noise but because of the heat, yes they have oil passages, but from what i've been told if your stuck in traffic or something like that its not something you want to daily. Again thats just the information I have always been given from people who have been in this for much longer than most of us, i know everyone has their opinions just thought I would throw a little of what I have in here
Great info thus far!