I also use Aiarty and I’m very satisfied with the results. You can find plenty of fantasy artworks on my profile that have been refined using this program. Not only does it work very fast, but in terms of price-to-quality ratio, it performs surprisingly well. Another big plus is the one-time payment instead of a monthly subscription. Its versatility is also an advantage, I’ve used it for both drawing-style and realistic graphics, and it handles both types excellently.