I think Hamaguchi is as great as Uematsu himself. I'm just sad that he doesn't get as much credit for his hard work. Uematsu, I believe is an awesome composer but when it comes to orchestration, he isn't as strong.
I like Liberi Fatali, Don't Be Afraid, Fisherman's Horizon, Balamb Garden, Eyes On Me, Love Grows, The Oath, FFVIII Ending Theme, FFVII Main Theme, Opening-Bombing Mission, Aerith's Theme, Cloud Smiles, and Theme of Love (FFIV). The FFVII Piano Collections is also great, 3 tracks directly used in Advent Children.