Just finished 07-Ghost. I thought for sure that anime was made around 2003-2006 era judging by visuals, but no it was 2009. I used DN Angel and Shakugan no Shana season 1 as references for the estimation, but more closely DN Angel. I had to ponder my incorrectness for a bit.
I haven't really watched any anime in years, but I decided to pick up Made in Abyss after hearing some great things about it. I'm on episode 5 or something so far and I'm really enjoying it. I'm fairly impartial about the characters, but I love the universe and environments that they created and the sense of adventure and discovery.