Hey there! My son Liam is bilaterally implanted. He received his first implant at age 3 and his second last year at age 7. He's doing awesome! I can't necessarily speak to the benefits of a CI with Single Sided deafness, but I can tell you we've been so happy with Med-el. The things we are most thankful for is it's MRI capability, it's reliability (both as a product- our processor has very few issues- and as an overall company- one of our main reasons for choosing med-el was because they were the only brand to have never had a recall!) We had also heard great things about their customer service. Having been a med-el user now for 5 years, I can honestly say the more I learn about the company and the devices and implants the more thankful I am to have chosen them. They have a lot of integrity as a company, their innovation is top notch- they are constantly leading the charge in new technology and the others tend to follow, and they really care about their recipients. The fact that every processor they make is backward compatible (meaning it can be used with every internal implant no matter how old) really speaks to that.
Let me know if you have any other more specific question. Good luck on your journey! I know how overwhelming this can all be!