if you like some volume, low watt amps are not for you, if you just like mid volume, then you may be fine with the proper speakers.
me, i like loud, raven, venom, celtic frost, pat travers, motorhead, living death, assassin, bathory, humble pie, hirax, bitches sin, onslaught, jungle rot, malevolent creation, etc so i need my amps and my speakers which are warm (less treble, not searing) which makes for more relaxed, listening time for me.
if you like some JAM time, get min 200-300W rms. there will be no clipping, no loss of sound, no muffled anything.
if you just like barry manilla, james taylor, ravi shankar, etc, the low watt will sound great!