I have an Optika 6 3-18 FFP MRAD. Its in the nascent stage of testing and use for me. Right now its on a 7lbs 338 win mag that has made several scopes go wonky. I hesitate to comment because the round count is still low at this point, but, FWIW, so far it's doing what it's supposed to do. Also FWIW, image quality throughout the X range, ER, EB, FOV, functionality, and click feel are all very good to great on this scope. I happen to like the large adjustment rings that I've seen described as "ugly"; they are easy to grab and move, and there's no question that your hand is on or not on where you intended to adjust. And while I enjoy a nice looking rig, I don't factor aesthetics into the selection process for a long range hunting scope.
I bought this scope mostly because I like the MRAD reticle. Secondly, I've had great experiences with several Meopta products in the past. I understand full well that the reticle has some shortfalls in certain instances; however, overall, it's very well designed and I find it to be a fantastic utilitarian reticle for all around close and long range hunting scenarios.
I won't get into specifics about the reticle; if interested, Ilya put out a great explanatory video on it.