I don't know if the term "better" is an apt description when comparing programs. I think there are many programs that are equal to Lightroom in one way or another. Affinity, ON1, MacPhun are a few. It really depends on what your needs and expectations are with a post processing program. I've processed, to date, just over 9,200 images using Lightroom and I find that it meets about 95% of my processing needs. I also use Photoshop, On1, MacPhun, and Topaz, plus a few more minor programs. I love the way Lightroom works and it makes my "photo life" so much easier. So, it works well for me but perhaps not for you or others. You might consider simply trying different programs using the 30-day free trial that most companies have.

I have the sigma and really like it on my 7100. Sharp pictures in my opinion.

One note: long ago I had my D70S fall out of my car from about 1.5 feet. I never really detected any problems with it but I always was looking at every picture I took for the next 7 years for a problem. I guessed that the fall happened around pic #6,000 so would always compare later pictures with previous pictures. My point?? You should note the picture number where the fall occurred so you will have a point to compare with. But maybe you're not as anal about it as I was. 😜