The more Luma NR you use, the greater the risk of softening the picture. The trick for me is to adjust it on a scene by scene basis, consider doing NR on one color channel only (like Blue, which tends to be noisy), and also adjust Luma and Chroma separately. In truth, the SNR Enhanced mode in Resolve - which they give you free with Resolve Studio - is almost as good and is already included. Their latest version is the best they've ever done and is made especially for Resolve. Short version: I think Neat does a better job overall but a) it costs more money, b) it takes more time, and c) it's very tweaky and has a lot of settings you have to carefully adjust for best results. (Note that this is a pay site, but I think the information they provide is worth the investment.) Bowdach just did a fantastic half-hour 2-part video comparing and contrasting Resolve 16 TNR/SNR with the latest Neat Video v5 over on.
