Most tower speakers are rated requiring a minimum of 150w & often far exceed this. Most receivers start at around 70 wpc & go up to around 130 wpc. If you have main speakers in your HTS which have a required power consumption of up to 200 watts then how powerful should the receiver be? Is having an entry level receiver (ie 70 wpc) power a 200 watt speaker going to do it justice or should you be looking at something around the 110 wpc level? My main speakers are rated at 200 watts yet my receiver is only 70 wpc (Denon 1603) - would upgrading to a more powerful receiver be worth the dollar outlay?