[CODE4LIB] refworks export

[Jonathan Rochkind]

If I have software I'm writing that I want to provide an export to 
refwroks from...

...refworks supports import in a bazillion different formats, many 
vendor-specific.

What are people's experience with the best, most complete, easiest to 
work wtih, 'generic' format for RefWorks import?

EndNote? RIS? Other?