I have had my 1050 for almost 4 years also, and it still sounds like it did when I got it.....excellent!

I still don't use it's 6.1 ability(wife won't let me put ANOTHER speaker in the room!), so 7.1 is meaningless to me.

The only reason I'd have to get the 1070 is for it's analog bass management, and maybe it's slightly better amp section......oh...and maybe because it looks nicer......ummmm.....PLIIx.....headphone surround sound.....uhhh....er....

Oh, never mind :rolleyes:
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It's all about the hardware!