Hi there at Scythe!
Like ekerazha, I'm curious about more precise difference between fans bearings.
Are those difference affecting noise?
Also, I just purchased a 1500RPM KAMA FLEX which is rated as 80000H MTBF on its package rather than the 120000H advertised on your website...
Some things aren't clear, aren't they?

Thanks for precisions.
Alex.