Yep, this is definitely one where a lot of time was sunk into it too. Personal pieces are great for that. Deadlines are good for learning discipline, but every now and again you need to work on a piece until it's right. I'm just lucky that I got to publish my personal piece as well. And people seem to be enjoying it - its #7 on drivethru's top 100 products from small publishers today, which is pretty cool.