This is a decent paste. I make a lot of boards with it. It prints well, wets well, doesn't smudge fine detail, doesn't spatter, and the residue seems pretty harmless. I make very subtle tones with it and the only time I have problems is when I mess up the application (I use laser cut masks). Don't use bismuth based material, I've gone through about a dozen different reflow profiles and it sucked for anything under 0805.