
It seems good too, although I have not done any scientific tests. (I do most of my work in Photoshop, so I don't use PhotoLabs for most of my work.) I recently upgraded my PhotoLab 3 to PhotoLab 4, to get access to Deep Prime noise reduction.

I also like and have used DxO PhotoLab for several years - mostly to have access to Prime noise reduction which I have found useful for noisy images and good for feathers and fur. Since then, both Denoise and Sharpen have added a comparative view mode that I find useful. I decided to do so, given I like the software and given it may be good for a company to have the incentive to continue to improve its product. I had the same question earlier this year when I got the message I needed to renew my license to get updated versions.

I use Gigapixel and JPEG to Raw less frequently, but also find them useful (Gigapixel more than Jpeg to Raw). It may well be that people with sufficient expertise could do something similar in Photoshop without Topaz, but not me. I use Denoise and Sharpen a lot and think they are very good.
