Such a difficult question right off the bat! There are so many amazing moments but I find most of mine fall in the sanderlanches near the end of his books. Kaladin getting his plate was such a vivid moment in my mind that it is probably my current favorite but that doesn't take away from so many others. His journey through depression to emerge, while not unbroken, a stronger person really resonated with me.
I feel like I will need to see how it is used in Era 3 before I make a final decision. The way in which it has been used up to now has ranged from horrendous to horrible but I see the advantages if it is monetized in a way similar to Nalthis breaths. If a person can sell a vestigial portion of their spirit web to better their walk of life then who am I to deny them. But the forceful removal that lead to death and abduction in Eras 1 & 2 respectively will always give Hemalurgy a negative connotation.
