So you are still doing it? I have stopped using spin content after panda update way couple of years ago. As content become king and the user expereince the key to earn website authority, I started focusing on writing more meaningful and engaging content. I never cam across any spinner that time which makes total sense after spinning. The spin content either looked very bad or it needed manual review. I forgot the name of the spinner tool as well. Looking forward for replied from more experts here as it could be an eye opener for me if spinning still works.
I've ranked websites in the past with spun content, and now they are still on #1 position of google. First year (2014) google found me because my spun was really bad, many paragraphs were just copied and my position drop from #2 to around #20 after a panda update. Later I cleaned all my text with better spun (I didn't buy any article!), my ranking went up again, and with more backlinks I reached #1 and it is still there