We have just posted up our review of the Trendnet TPL-420E2K Powerline 1200Mbps AV2 kit. This is very speedy kit that gets great performance thanks to MIMO (multi-in, multi-out) features and is by far the fastest kit we've seen to date. It's faster than many wireless networks and doesn't have the same interference issues to deal with. If you need to really stretch your network, check our review for all the details.
The TPL-420E2K Kit is the fourth kit from Trendnet that I've looked at and it way more impressive than I expected for a powerline kit and is the first time I've really been impressed with this technology. Short range performance is very impressive, thanks to the full MIMO feature set. Also, it holds good performance over some crazy long distances.