Join Date: Apr 2006
Location: Ottawa (Stittsville), ON, OTA (DB4e & VHF-HI folded dipole, AP-2870 pre-amp in Attic), MythTV HTPC
My leaning would be a coax based Ethernet adapter over power line adapters. They use frequencies unused by either cable or satellite and since it is a shielded cable in a controlled environment, it will be much faster and more reliable than a power line which is unshielded, and has many sources of noise plugged into it throughout the home.
Link to my TVFool results is in my profile Homepage URL. I suggest others do the same.