Thank you so much, I've been looking for a list like this. Mostly as I've been thinking about a good slim 140mm fan to use in Necere's slim case concept (it's like fantasy baseball to me honestly). I think the Prolimatech Ultra Sleek Vortex 14 would be best because of that insane airflow and low noise. Honestly, that fan would be amazing in any SFF case that can benefit from airflow, tho it cannot really replace a heatsink fan. I would love to see a slim 140mm fan from Noctua, but it's such a niche market for those, I don't expect them to do it.