I would like to purchase a receiver that I will be using for 2.1 or 3.1 due to the size of my room. I will be using the receiver for music from my Mac, streaming and cd player along with TV audio. I have located these three units on accessories for less: Yamaha Rd-V683 $299, Denon AVR X2400H $329 and Marantz NR 1608 $349. Any experience with or suggestions would be greatly appreciated. Several members told me to check out accessories for less is it a good idea to get the extended warranty as well? Thanks