For me... It would be Alex. I've always found my deepest connection for the show between the sisters.
After them...it would be the season 1 family collective--Jon, Winn, James... with Cat, Lucy, and yes...Maxwell.
Favorite new addition... Lena then Lillian.
I find it weird that my preferences match completely with this.
But, they do. This is my order of preference and liking as well.

Just to be clear, I liked Maxwell as a compelling grey character, not as a shipping preference for any of the ladies; well, except may be Cat.