If you have tried the previous version Photo Raw 2018, then you have pretty much tried it. The .1 version adds some bug fixes, tethered shooting, soft proofing and some enhancements to the browse module, like auto advance when sorting, etc.
As to compare it to LR or C1 that is a more individual thing. The color correction and image quality in C1 is very hard to beat. I have not gone to the subscription for Adobe so can't comment on it versus the newer software. On1 is another type of workflow, the masking features are quite nice and the perfect brush makes complex masking a breeze, it is also a layered and non-destructive workflow. I like aspects of it, but then I also have c1 and that is hard to beat for ultimate image quality. I also have luminar, which I find is lacking a lot of things though they are still working on it, at least for the windows version. They all have their nuances. I like a lot of On1 and use it, as well as C1 for more serious work, they both have their places. I like that On1 has 5 installs. I use it on my small travel notebook along with Affinity Photo.
They do have a 30 day trial, in the end you are the only one who can ultimately decide what works for you. I don't know what is important to you in a comparison so hard to give a judgement call. I wanted to get away from LR and PS for my own reasons. I have found Affinity Photo a good replacement for things I use PS for, and I have found that C1 and On1 make good solutions for me for editing.
Alan