I would avoid the Samsung refrigerator for the reasons above. Our ice maker also stopped working right. We had an appliance guy over for a different issue and asked about the Samsung ice maker. He was very familiar with the issue, but also said he refuses to work on them.
His position was that Samsung knows of the issue, but will not issue a permanent fix. His opinion was that there was is an issue with a seal, which allows in air or moisture or some such, which causes ice to build up. But, he didn't think there was a good, permanent fix for that and everything is just temporary, which causes people to get frustrated when it fails after X months/years.
This is not my field of expertise at all, so that could all just be bogus because he didn't want to work on it. But, it seems plausible, and I appreciate that he didn't take the opportunity to charge me for a fix that may not be reliable. Long story short, it is a known issue, Samsung refuses to fix it, and I'd avoid that brand for that appliance. It also makes me hesitant to purchase that brand for any other appliance. However, we have a Samsung washer/dryer (bought before the fridge) and they have been just fine. Good luck.