Summary: I have to admit that initially, I was skeptical. It wasn't until I was finally fed up with my poor wireless performance in my house to my PS3 in the living room that I decided to give it a shot. There are many Powerline network options out there for far less money but reading up on the specifications and comparison shopping led me to choose performance reviews over bargain shopping.
Summary: Combined this product with a D-Link DIR-815 router. My bluray player now connects to the internet flawlessly. Could not do that before using the wireless feature on the bluray, and a max-g router. Even tried other dual and routers without this pseudo-hardwire device, but they did not work either. I'm very happy with the way this device performs.
Summary: Got a pair of DHP-302 modules and they are very easily to install and use with good throughput for internet use. They work fine right out of the box, even if you skip the setup steps. The utility disk is very easy to use and the manual is clear. D-Link even includes a couple of ethernet cables in the box - nice touch. The modules seem to run warmer than I would have expected, but no problems.
Summary: To be blunt, I'm not sure what the 1st review is about. These units are quite straightforward, simple & easy to use. Plug one into your router, and the other can give you a good connection at any outlet, no setup, no buttons to push, nothing. Plug & Play! Note that you do need to be on the same breaker board (NOT the "same circuit"). Plus, Amazon is (at the time of purchase) about $50 below other sellers.
Summary: I purchased the DHP 303 back in 2009. We had recently constructed a house with a movie room (and room for the XBox) in the far upstairs corner of the house, with our wireless router downstairs on the opposite corner. Since I had a wireless adapter for the XBox, I wasn't concerned (at first). However, I noticed a definite dead spot/out of range issue in the movie room, and the XBox would often lose signal (horrible if you're playing online or streaming a Netflix movie).