The Sculpt Ergonomic (https://www.microsoft.com/accessories/en-us/products/keyboar...), or the Sculpt Comfort (https://www.microsoft.com/accessories/en-us/products/keyboar...)? I'm looking at getting a new keyboard at work, and I'm considering both.

Years ago I had a Microsoft Natural Keyboard Elite keyboard that I really liked, but they are discontinued now and I'd rather get a new model if it is better or comparable.

The split one is the Ergonomic model, that's probably what they're talking about. I just switched to the same one from a fairly nice mechanical keyboard and it feels a lot better.