I use the following.
Paasche H: priming & applying matte varnishes
Iwata SAR: base coats & Future
Iwata HP-CS: finer work & detailing
I recently bought an Iwata HP-B Plus (0.2 mm nozzle/needle) but I'm not sure if I really need it because I can do all fine works with my HP-CS. I bought a pre-set handle for my HP-CS, which makes spraying fine lines very easy.