I really liked Love & War. Not so much for the mechanics, which I haven't gotten to implementing, as for the wonderful treatment of chivalrous ideals. It really showcases the range of possible "knights" well, playing with putting the emphasis on various ideals - from honorable dwarven knights to dark knights abusing love. I think you'll find some neat ideas there for making knights of a love deity, including rules for courtly love (which will at least inspire, even if you don't wish to use them).
I also found Seven Strongholds neat, having used one of them to great success (an elven castle).
I didn't like Occult Lore. Fluffwise, it recycled ideas from Ars Magica's The Mysteries, which were far more fitting there and better presented. Mechanics-wise, the presented classes seemed too strange or too banal to me; either weak NPC magic (like gypsies) or practically flavoreless (elementalists). Some were outright not-appropriate, I'm surprised they transported the nightmare that is the "Realm of Reason" (as anti-magic) to D&D.