I use Kodak's flex color chems. If you are doing small batches you'll need a calculator and a hydrometer. I have also used stuff by a company here in Michigan -- their name alludes me -- and it works well and is available in small quantities.

A couple items you need to be aware of: bleach must never (not even a drop) get into the developer and that temperature and time are critical; over development (from too high a temp or too much time) of e6 materials makes for an unbelievably dense piece of film; but pull processing of e6 films in c41 chems is far more useful than c41 films in c41 chems.