OP, Don't look at the watts issue so much. As Drive King has said - 15 quality watts is better than 100 garbage watts. There are many single ended amps that only produce 5 watts and they cost thousands of dollars. What you are lookinig for is quality. I have heard a similar Yamaha system and I have heard the Polks also. My advise to you is to listen to them if you can before you buy them (find a store that carries them and listen to them). If I were to give my personal preference I would choose the Polks over the Yamaha's.
Yamaha used to make high-end speakers years ago (the re-entered the high end market last year - but these aren't them). The speakers that Yamaha produces now aren't nowhere near the level of their older speakers. That said - the Polk RM has been a giant killer for about the past 12 years or so in some manifestion of the model. It virtually remains unchanged. Very solid sats and ratings are more realworld than that of Yamaha. Now for $129.00 they yamahas are ok, but you should be able to find the polks for 179.00 and if I would choose between the two at those price points - the Polks are worth the price difference.
