Because of my job, a lot of my listening is done at fairly low volume. Thats where the sub comes in handy too to bolster a little.
On days off I let rip on occasions. This is where a high power really comes into its own. Although my speakers are all easy to drive a solid hundred watter will just have more transient attack on difficult signals. Having said all that, I am always aware that there is more to music than just peak signals so wouldn't necessery generalise as to what is 'better'.
Horses for courses and all that
Happy weekend everyone x
regards