Following-up on the @Andy_Hutchinson, I think he is normally “spot on” and I love his curmudgeonly give and take no BS style. Sometimes he lets his political bent get in the way of things, but I have found very little to disagree with in his reviews. I do hope he makes an updated review of Nitro, because I am starting to look at it much more seriously with the new key wording and other improvements. I have been using DxO since Optics Pro 3.0 and am basically fed up with their “F U” attitude towards their customers. The insanity of not letting users control their license activations and the 37 day “time out” unless contacting the mother ship is total BS and is kicking me out of their orbit for future upgrades. Great software, but driving me (and others) to alternatives like Nitro and others.
I just tried Nitro again having discarded it at the start. It still does nothing for me, I hate the interface and find the entire app somewhat difficult to use. Not happy with the results from the sliders either. Don’t see it being a viable alternative to PL any time soon. But that’s just my opinion. To me it matters not a lot what some reviewer says - it is hands on experience that counts.
The Nitro Photo app uses Apple’s demosaic engine that seems to work quite a bit differently from other raw converters I have used. But after reading the user manual several times and going back through answers given on Nitro’s online forum, I’m getting satisfying results. I enjoy using the app. Its interface works for me and I appreciate the support and continued improvements provided by Nitro’s developer.
ColinG has a genuine aversion to Nitro, so he skips qualified reasoning and just lashes out.
Whatever works for you is the right choice. I shall stick with DxO and if they are not around then for me it would be Lr. Pleased you have found something that works for you.
Thank you.
DxO PhotoLab works well for me, too. Especially in low light or when lens distortion is present. I like trying out raw converters and have purchased or subscribed to many and run trials for many of the others. It’s just something I like to do. 
Boy, am I gladly eating crow with DxO PL9 just being announced WITH user control of licensing, recent improved noise correction for xTrans AND some promising AI masking features. Looks like the best photo software finally listened to its customers. I WILL be upgrading to PL9 (once the initial bugs are fixed).
The current version of Nitro is not bad. DXO could take some pointers on some small details of the user interface. Not the least of which is the very simple quick side by side compare mode. I purchased a lifetime license to support the developer.
But PhotoLab also has side by side, top and bottom and sliding comparisons
But the implementation is cleaner and simpler in Nitro. (side by side)
Nitro allows comparison of multiple images, not just two image, useful when culling. Nitro also has toggles to compare basic metadata and zoom sync to reposition the subject per photo when panning the comparison set.
However, Nitro does not seem to have the “split-image” compare tool available in PL.
I prefer the multi-view option for culling, but the split-view for most editing purposes.
Not sure that it’s truely practical to have one software tool that does “everything”. 
Example of Nitro for image comparision
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That’s certainly not enough for me to consider Nitro as being a viable alternative yet. As you rightly say we will never have software that meets all personal preferences
@ColinG
Agree, and don’t mean to imply anything else.
Nitro might fit into my workflow as a basic DAM, not as a PhotoLab replacement. My other camera is an iPhone, and my PhotoLab developed images are shared via Apple Photos and a SmugMug site. Would like to better integrate these two “worlds” and Nitro’s ability to access and manage the Apple Photos app images are a real plus.
PhotoLab will continue to be my RAW editor of choice.
And Nitro doesn’t have a 1000 image limit for keyword searching.
