Review on ARCTIC P14 PWM - 140 mm Case Fan with Pressure-optimized PWM, Ultra Quiet Motor - Fan Speed: 200-1700 RPM - Black by Alexander Morgan

Seriously, BUY THESE FANS! Never had a problem with them running them for months, other people's scabbards sometimes rub on the blades because they're CHEAP! My Enthoo Pro doesn't rub at all, and I'd argue that any case that costs over $50 and isn't a cheap imitation shouldn't have any fitting or rubbing issues. You can't go wrong with these fans, in general the pressure for 140mm fans is excellent, which allows them to easily overcome the impedance of CLC or custom watercooling radiators because that's what they were built for!