Poppy's customer service is wonderful, but the quality of the CUSTOM pieces can be dissapointing sometimes as I have noticed in several pictures, not just these. I agree that if it is a very sentimental piece or more than a casual/fun ring I wouldn't go for Amcor custom. However saying that several ladies have been happy with their custom rings from amcor, and their custom prices are hard to beat, but you do get what you pay for. I have yet to use them for custom work, and I still may, especially for simple earrings etc.
I would absolutely recommend Amcor for non custom work though!