I just started using Anki and it's very good so far. I use the Image Occlusion Enhanced, and Cloze Overlapper addons and it greatly helped me in making flashcards fast.
It really helped when I was studying for my board exam. I made some decks a few months before the boards and then I went over them a week before the actual exam as a refresher. It's good too since you can answer decks on your phone.