Just a note of caution...you can damage your speakers with too much power, but its not likely.
Too little power causes you to overdrive the amp, lots of clipping, lots of harmonics which cause the speaker to due nasty things and eventually die.
Too much power will burn up the coils (I have done it). But, in general speakers will easily handle more than its rated load for short periods with no detrimental effects at all. So unless you plan on driving a pure sine wave at 150W continuous (music and movies are not), I wouldn't worry about it. I use 200W Adcoms into my JM Labs which are only rated at 150w. Never had an issue even at high volumes.
mitchius - I see you're just across the river from me.