Wouldnt go to this program for finished pieces, but its good for scribbling down concepts when youre on the road or caught without a sketchbook. No delay between stylus/finger strokes and program.
The user interface is clean and easy to use. I like that it disappears when the stylus/finger touches down on the canvas. Some of the brushes seem a little redundant, though.
Augmoff about Sketch Pad - My Drawing Board