I am trying to decide which receiver to buy. Yamaha RX-v663/HTR6160, Pioneer Elite VSX-91TXH, or Pioneer VSX-1018AH. Prices I have been quoted are within $50 of each other, with the lowest price being the HTR6160. Any thoughts on these? Will be using with Samsung 630 LCD and blue ray. I made a deal on a 6160 that fell through and now I have a few more options and have started to rethink(driving my wife crazy)any help appreciated.