I just completed rewiring my basement and added two ceiling speakers for rear surrounds. I thought I would never be interested in expanding to 9 channels, but I wish I had researched beforehand, for I would have at least wired for it.
Just saw your last post - bummer. I would either do it myself (get a couple of six packs and ask for help) or break down and pay for it. Regret is a terrible thing, even for a moment.
With all due respect, anyone who argues that there is little appreciable difference between 2.1 and 5/7/9.1 in a home theater either:
1) has horrible equipment
2) has bad placement of equipment
3) is a troll