Hi! Thank you. I saw that earlier this year, and have looked into it a bit. Cool stuff!

BSD wins for me, but I am biased because it is something that I am working on. However, my biases aside, the problem is currently producing lots of advances in mathematics (e.g. progress in p-adic L-functions and Iwasawa theory by Urban et al, and all of the work by Bhargava surrounding the solution to BSD "on average").

right, that's the one that I asked mentioned in the above post (thank you for linking it; I suppose I should have done that).