My Powerline adapters are fast enough to directly stream HD content from my DirecTV receiver to my upstairs HTPC.
That's about as throughput-heavy a need as anyone would have in a home theater configuration I'd guess. I did get the HD version or whatever they are called and not the slow version. Overall they've been completely hassle free and I've been very happy with them.
I haven't used them personally, but I've heard good things about them as well. DCDeac has always given them glowing reviews as well.
I'd definitely look into this if I were you, Deacon.