Too bad to reflect the idea of his laptop, smartphone or tablet on TV is indeed great, but so far rather useless, since the delay all the fun is in the way. Hopefully there will soon be a better solution, or maybe it's also because of the current Wi-Fi technology is not, I know myself in this area is not so, but it would be desirable in any case.
Optics, price and ease of use are the advantages of PTV3000, but that is not enough. As long as the delay does not improve, I remain "old-school" and use an HDMI cable to mirror ... Who wants to only stream content, which should rather buy a cheap Chromecast unless the own TV is no SmartTV.