The tower two π goes deeper, but the studio two π is smaller. The smaller studio two provides adequate bass, but the additional bass from the larger tower two is nice. One is great where space is a premium, the other is better where a floor-stander is preferred. Both work very well on sensitive SET amps as well as more powerful designs.As for the wood, it's really "six one way and half a dozen the other." I prefer MDF and particle board because there is no chance foir voids to develop. It's not so much the void I'm worried about as the debris in the void, which will buzz. Then again, high quality plywoods are usually pretty good and as long as there are no voids, it makes a very nice speaker that is more durable than MDF.