Since installing my Dark Cherry DEPOS (roughly 2 weeks ago), I have been very satisfied with the decision not to go OEM. My concerns before purchasing was fitment, LED quality (consistent brightness) and whether or not they would leak.
I did have to adjust the inboard lamps, but I imagine the OEM were probably hand fitted at the factory too. LED brightness is great. It's seems consistent among all LED and their aim/trajectory seems consistent for the individual LEDs. One thing I noticed is that you cannot see the tail lights from the side of the car in the dark, but the OEM may be the same. Last, I have taken my car to the car wash where you use the high pressure wand, and I have absolutely no leaking or moisture.
Mounted on the car, I think most observers would be hard pressed to differentiate the DEPOS from the OEMs.
The last factor will be longevity. I'll provide a follow up on how well they held up when the 2014/2015 Golf R hits the dealer's lots.
For anyone on the fence, I say give them a try. If you're not satisfied, it's very likely you can sell them for close to what you paid and you can still buy the OEM's. For the difference in price, I was able to purchase upgraded SEAS tweeters and crossovers for my home theater L/C/R channel speakers.