just subscribed to playstation vue last week myself. for $30 you get a lot more channels and the $35 package gives you 5 streams. so far no issues with buffering or freezing and i am very impressed. only thing is you don't get a true channel guide on roku devices. so you have to get used to skimming the channel icons for what's on right now. the online cloud based dvr is the icing on the cake for the service.
i'd suggest looking into that service if you are looking to cord cut. paired with the 33 over the air channels i get (pretty good for free over the air) with a digital antenna and there is still more to watch than there is time for.