My experience of power line products like that is that they generated a serious amount of RF interference on radios in the vicinity. Throughput was good, but since it caused so many problems elsewhere we couldn't continue using it.

I'd have to say my Mikrotik 750G is also my secondary gadget of 2010. You get a great set of features and good performance at a decent price. I'm tempted to get a pair of the high end models for work.