Delta, ebm-pabst, Sunon, Sanyo-Denki, NMB..
This, pretty much. Except that it's ebm-pa
pst, not that their name is comprehensible to non-Germans anyway.
I've always had the best luck with Sanyo, personally, but it's not particularly important. All of these brands are good.
More importantly, choose a 12V fan. Other voltages, especially 24V, can get seriously hard to source if you need an alternate. Or you might not even be able to find what you're looking for in the first place. Do not be tempted by the siren call of other voltages; keep your fans 12V and future you will be grateful. (This is for "full-size" fans. For micro fans I understand 5V is very common and might be better.)