1hb
Mace of Dark Glory might be hard to get to solo/molo in low 50s, but should be doable by mid-/upper-50s with defiant gear. Lot of others, but I like the proc, and good ratio for the 50s
2hs
Edge of Evelopment tough to get molo till 60s, but sometimes for sale in bazaar.
1hb / 2hs / p
Sweeping the Steppes: Gnolls is a descent quest for descent weapons, but the EoE above is alot better 2hs than the one from this quest, and your BoD is a better 1hs due to it's knight 1-hander ratio
Can't think of any good ratio tradeable 2hb, but
Mournfollow is a descent no-trade, but prob too difficult to get at a level where it will still be reasonable to use.
This thread may have some useful info about procs for a Pal.
PoK NPCs that sell defiant jewelry:
Iason Yureska (Level 50+ items) and
Keefe Stearns (Level 5-49 items) as mentioned.
Franklin Teek in PoK offers quick hot zone tasks with belt/shoulder/back defiant gear rewards as mentioned.
Silverwing quests as mentioned are also good source for equipment.
Yther Ore.