I've never flown the AW or this PAU one, but the 300SP is a single seat version of the 300LP, according to the Extra Aircraft website. Here is the link to the PAU Extra 300 SP
http://www.flypau.com/html/extra300sp/extra300sp.html. I would think that the PAU plane would be better if 3D is your style as it has 100 square inches more wing area. I'm sure the AW plane flies great, and it does look really nice, but I thought I'd point out the other options out there.