Right now I'm really happy with my 5.1 speaker setup. Four Infinity Delta 60 towers, a matcihng Infinity Delta center, and dual Infinity subs.

However.. if you read my previous post you know I'm looking for a new receiver and some offer 6.1 or even 7.1 surround sound setups. Here's what I'm wondering:

- DTS-ES and DD-EX which are real recorded DVD formats are only 6.1, right? Is there any actual 7.1 recorded material?

- Is 7.1 all that much better than 6.1? Is it worth the jump? Is it actually two distinct surround channels, or does it just expand the mono rear center??

- There's an (extremely rare) infinity Delta center channel on ebay right now which would be *perfect* for easily expanding my system to 6.1. Should I hold for a couple smaller towers to get 7.1??

Thanks!

-Olen