>>10738860Besides precision? Let's be honest - both methods have their own pros and cons, techniques and skills required. Many people mix both, even mini painters often add base coat of dominant colour all over miniautre to speed things up or scale modelers paint details with brush.
It all depends on situation you are in - in my case, where the only place for work I have is my own desk at my room, spraying is not an option, even with water-based acrylics and mask, since I have essentially no ventilation. I'm content with my work, however.