At present, I am debating whether to ditch my current receiver (sherwood 925 rds) for something newer as I bought it only 4-5 years ago, the reason? its 5.1 and as much as I like it, I'm really curious as to how 6.1 sounds, is it really essential? does it play a crucial role or is it more ambience noise? I ask this because I LOVE my sherwood which is a superb performer and coupled with good quality interconnects and components has impressed quite a few home cinema friends with its quality over the years. Last night I was demoing some laserdiscs and played the sequence from ID4 when the captain shoots a tin can off the alien craft - this sequence always impresses and really shows the best of 5.1 but would 6.1 make enough of a difference to warrant an upgrade? Given how cheap 6.1's can be picked up from these days, I could pick one up with no problem but I just think it's a crushing shame to upgrade when my current amp is knocking me (& everyone else) for six.