Don't forget that you gotta at least double your wattage to get a noticeable difference in volume. 150 vs 100 watts in insignificant even 100 vs 180 is not significant it's gotta be 200 vs 100 to really matter. Any receiver from Pioneer, Onkyo, Marantz, Denon, HK, or Yamaha should work just fine. I strongly suggest getting a 7.1 receiver since you'll typically get a more features and have the option later on to add surrounds if you so choose.