Tons.  They were my mainstay up until a few years ago when a gloss coat cracked on me, no idea why, but it prompted me to try the Vallejo's and I like them better if for no other reason than they are ready to airbrush (you have to thin the Micros with WATER).

For a gloss coat, honestly, the MicroScale finish is a little more consistent/smooth, the Vallejo gloss requiring a learned touch to get it right (tends to "texture" a little if you don't work fast or heavy enough), but for Matt the Vallejo produces a flawless DEAD flat finish, almost impossible to screw up.