There are so many crap fictions out there I've stopped looking but I stick faithful to my favorite authors.
Goldberry has breathtakingly-amazing work. There are a lot of AU but everybody stays in character, it's so real and borders close to perfect in the way they create images in my mind's eye.
YL has work with a very bittersweet style (meaning it's both heartwarming and heartbreaking at the same time). YL's work, in my opinion, has the most emotion out of a vast majority of the stuff out on ff.net.
Both fanauthors have IchiRuki work, although I do prefer their non IchiRuki work a little more (Summer Rain for YL and Broken Hallelujah for Goldberry are my favorites).