What type of paint do you use to paint details

I use Tamiya enamels (yes, enamels.  I buy them on Ebay and so far have never had a problem receiving them).  They brush paint wonderfully.  I usually use Tamiya spray for the basecoat, and then Tamiya enamel for the smaller parts/details.  

I guess the only drawback is the lack of colour selection (around 80), but for my needs it's fine.  

I mainly use acrylics but not tied down to just Tamiya brands. Tamiya is good but not my go-to paint due to the limited color range. I also use Model Master, Aeromaster, Pollyscale/Floquil Railroad colors and Mission Model acrylics. Mission Model acrylics are getting a lot of looks due to ease of airbrushing and clean up. Just recently, they just expanded their color lines. No doubt they're getting a much wider color range than Tamiya.

Now to answer your question, it really doesn't make a difference what you use for detailing. I use both acrylics and enamels. My go-to clearcoat is Rustoleum or Testors clearcoat in a rattle can.