Satin is what I used, but it was sometimes a little too shiny for me, so on my last coat or two, I would hold the gun back and not completely wet it... not dust it... but not completely wet it either. And after it was dry it would be more dull.
You can use 0000 steel wool to knock the shine down, or use water and a rubbing compound or rottenstone and it does a REALLY nice job too. There are other ways too I'm sure, but these are a few things to consider.