I use PTGui for all of my stitching projects. For commercial customers I have a whole workflow that starts with FastStone, passes through Lightroom, gets stitched in PTGui, finished in PhotoShop, and finalized in Paint.Net. Each tool along the way makes the final product appear more and more like a single very high resolution picture. For personal use I just use Lightroom, PTGui, and sometimes PhotoShop depending on the number of stitching errors.
Where PTGui shines is when it comes to fixing stitching errors. The Pro version allows you to reduce almost any stitching error to something manageable which can then be completely fixed in PhotoShop. Drones, wind, and photo stitching is just not a combination that was ever meant to be; so it takes a lot of work to turn a stitched pano into a commercially viable product.