Bit-Tech posted a review on the HomePlug powerline network kits

At the end of the day, 48Mbit/s is more than enough for both Internet use, as well as file sharing and more consistent that you are likely to get from wireless. Performance is a little lower than we would have expected and is certainly not out to replace traditional cabling, but the two kits do offer the same reliability of transfer. There are also no issues of reception and it can in theory travel up to 200m, which is pretty much any power outlet in your house.

HomePlug powerline network kits