Have a look at Louis belet tools, primarily for watch making, they are fairly expensive but all their tools are polished and the smoother the cutting edge the nicer the finish.
Rainford engineering supply them. They also supply cheaper tools that perform very well too. But I would definitely take a look at Louis belet. Around £48 for a 2mm bit but IMHO you're buying pure quality.

I can't afford any yet but as soon as I can I will definitely be investing.