I can't talk more highly of Judge.me. I've been looking to replace the default Shopify Product Reviews and had been considering another app, Stamped.io, that has some impressive features but every time I checked the price it kept on going up, up, up for the enterprise plan. I mean seriously, in the course of a couple months their enterprise plan went from $79 to $99 then to $199... I couldn't trust a company that raises their prices over 100% in a matter of months so again I started looking for another review app.
At first I thought there had to be a catch as they offer EVERYTHING that all the other apps offer but for only $15 a month. Not only that, so far their support has been great. Octavian and Tony were super responsive and were able to get the widget installed with minor adjustments in no time. So far I couldnt be happier with this app. Highly recommend!