i got the
TRENDnet TPL-401E2K 500MBS Powerline AV Ethernet Adapter Kit on sale for $79... works good... not complaints..
connection also depends on how old the power lines in the house is also... the best thing, you can move the second adapter to any part of the house freely (non-wireless verion) ... or you can keep adding 1 more.. if you can find the 500mbps for cheap, go with it.. this way you wont have to upgrade again later down the road.