diamond tools

Anybody out there have experience using diamond tools? I'm looking into having some small (.8mm) diamond end mills made and was just trying to figure out if this is the rout I should be heading in. Currently I'm using 2 flute tungsten carbide square end mills in platinum. So far I've gotten a decent (by my employers standards) finish but am looking to find a tool with a bit more life or an improved surface finish. I would love to hear any feed back on manufactures or personal experiences with diamond tools.

Thanks in advance'
Pete