I really like Endorsal, it's really easy to set up and implement and it looks fantastic. I've added it to a Wordpress site and a site I created in AppDrag. Pulling in reviews from Facebook has been a massive plus for my clients, saves them loads of time. It's a pity the review form doesn't publish back to Facebook/Google as the review collection form is so good.

My video review: https://youtu.be/hlksAt9VgrM