Work in a medium sized chip company (3 years). PhD, with 12 publications in top conferences/journals (engineering), 12 reference letters, majority from people who I haven't worked with, but who i know through conferences/research reviews. It is important to get letters from outside the country. I got 1 from Canada, 1 from Japan, 1 from Hong Kong, and 1 from Taiwan. It is important to have very focussed letters that comment on your specific abilities that make you an OR, and to discuss your prior research work and how that work influences the works of peers.
I am actively involved in research reviews, and frequently review conference/journal papers. I am also on the PhD committee of a graduate student. My work was also mentioned in a reputed engineering news publication.
There is no substitute for collecting and crafting the best possible petition that you can. I used an RFE from another petition (which I obtained through my company immigration lawyer), and used that as a model of what to do right, and what to avoid. It has become tough to get through the OR, esp when you are in the high-tech area, and with the narrow interpretation that USCIS has of Outstanding Researchers. I was actually discouraged from filing this petition by my company (i persuaded them anyway), but I went and did the best I could, and got through without an RFE.
Good luck to all
Cheers