This is my first time getting the "Spring fever" filled mop, but not my first AP mini. It's a great marker, perfect medium size nib and body. Easy to control. I got the Orange color. I like the paint, it's thick, opaque, and vibrant, but I found that it didn't flow as much as I would like. I ended up squeezing it harder than usual and still not getting any drips. After it was about half empty I topped it off with some other refill paint I had and it flows great. So certainly not a deal breaker, but if you like it drippy, you might have to add something to yours. I can't speak to the other colors as I've only gotten the Orange.
As others have said, this is a great marker for slaps. I also use it in my blackbook/sketches. Xylene free means it's not gonna give you a headache using it indoors, but it still writes a smooth, opaque line. I really like how light it is too. Great little marker.