So I had a Denon AVR-590, but the HDMI inputs crapped out on me so I took it back and I upgraded to a 7.1 Denon Avr-791. It is rated at 90w x 7 channels at 8 ohms and 125w x 7 channels at 6 ohms. I currently have the Energy take Classic 5.1 speaker system and I wanted to find two additional speakers to go with it that will match well, but aren't too expensive. I am planning on moving my current to front speakers to the back and replacing them with larger speakers. I haven't decided whether or not I want bookshelfs or tower speakers, but I am open for suggestions. Please let me know what you think. Thanks.