We've used this product with some success, but the PowerLine stuff has been somewhat more successful and a better connection (when they do work, that is). But "more successful" might be a 5% improvement. Every case is too individualized to rely on reputation at someone else's environment - you live in your own, and that's the ONLY place that matters.
For something like a "trial and error" product, I'd recommend a local purchase - at a store you can return the product if it doesn't work.
For the PowerLines (at twice the initial price, by the way), if they don't work out-of-the-box, then they probably won't (a sync light shows up in 2-3 minutes, tops. Plug in one near the router and connect it with a CAT 5-6 cable, then go to a nearby room and plug in the Receiver unit, and wait for it's SYNC light to show up. If it does, then you can unplug it from the wall and take it to the next room, and so on. No connection to a computer is needed for the SYNC light to display. If the SYNC light is on, I plug it into a computer, turn it on and it should have a valid CONNECT from that point.
Same with this wireless option - you should have a fairly quick CONNECT although some tweaking can solve initial failures, and sometimes increase speed.