I am currently using TexShop and BibTex, but not really that happy with it.
I would like to hear your experiences. I've had tried to use JabRef, but had some troubles when adding the .bib file to TexShop. Anyway, this seems to have been sorted out so I'll probably stick to JabRef in the future.
Just for you to know, I've been using Zotero for quite some time, but it seems to complicated for me to integrate it with any Tex editor.
The idea is to use a Tex editor for working papers and such research-related documents.