[kbouck]

My experience with PowerLine (TPLink) was really awful. Completely unstable and inconsistent performance.

We then switched to MoCA (ActionTec) and it has been about as good as a direct ethernet cable. Consistent performance and stays up for years at a time. No issues ever.

The performance of each likely comes down to how much noice is on the respective wires. Our electrical network is likely crowded and influenced somewhat by neighbors. However our coax was completely unused and I disconnected it from the outside world (for privacy and noise reduction)

If you have coax outlets in locations useful for networking, I would definitely consider using MoCA instead of PowerLine.