Yes power makes a difference. The more power, the more the entire system will play with a sense of ease. A sense of ease is hard to define but you will know it when you hear it. Music just seems to flow from the speakers, loud passages will jump from the speakers instead of kind of falling out of them. The speakers will have greater authority no matter whether they be stand mounts or floorstanders. There will be no strain at any level and the louder you go, they keep their composer. Now that assumes that the speaker is of good quality also. Just buy the most watts you can afford, I don't think you can go wrong.
Achieving a speakers max potential
Can someone help me better understand the relationship between the amount of watts driving a loudspeaker and reaching that speakers maximum potential? If for example a speaker's power handling range is 25 to 150 watts, will you not reach the speaker's full capability if it's not seeing 150 watts behind it? Will you hear more detail and information out of that speaker if it's being driven at 140 to 150 watts than if it was being driving at say 60 watts at the same volume (dB) assuming of course the amp or receiver and speaker wire are of high end audio quality? I tried to find a thread on this but nothing turned up. Thanks much.