I was right there with you, using Nebulosity, some Photoshop, some native Maxim DL and CCDSoft. Tried DSS, tried CCDStack, all of them.
Nothing I have ever used compares to PI, in my opinion. From the very first day that I was using it to remove a deep gradient on my M31 data (effortlessly) to using it to win the Hubble's Hidden Treasures contest, PixInsight has just gotten better and better for me. They're adding new tools and refining their processes all the time, and I think it deserves the top spot among astro processing software by a large margin.
So, welcome! Bring questions you have to this forum, look for all the great tutorials online, and share your progress with us. I think you'll find what I did, that PI revolutionizes your processing workflow and results.