Welcome, blobula. I'll also put my vote in for the 60/500 setup. Yes, the 80's will perform better than the 60's, but it's not a jaw dropping difference. The 500 on the other hand, is in a whole different league from the 350. It will make you giggle like a little girl when it's doing it's stuff.
60's to 80's - small performance jump. 350 to 500 - BIG performance jump.
Like you, I built my system piece by piece as well. Instead of starting with the sub, I would suggest starting with the mains, then sub, then surrounds, and lastly the center. Reason: As much as deep, shake the foundation bass is unbeleivable fun, you'll be in awe of the clairty and soundstage the mains give you. Guaranteed, you will play every one of your CD's & DVD's just to hear what you've been missing all this time.
