Provided your room can handle a 6.1/7.1 set-up. I would much rather have a good well set-up 5.1 system than a mediocre (compromised) 6.1/7.1 set-up. If you have the real estate, then 6.1/7.1 can well be worth it, just remember, more does not always mean better.
Other than that, I agree that...