We recently tried a new position that turned out pretty good. She was tied face down on the bed, with her head near the footboard. Her arms were attached to the legs, spread apart. Her legs were also spread wide and tied, and I sat inbetween them. She had a couple of pillows under her hips, so her ass was elevated, and my legs were around the pillows, under her thighs. I had a great view, as well as being close enough to be able to spank her hard, first by hand, then by paddle.
For some reason, she finds being facedown most stimulating, probably because her breasts rub on the bed or something.