Rings:
DWGR by default
Wolf Ring if opponent has a greatsword/curved greatsword
Hornet Ring if you need to chain stab someone
Bellowing Dragoncrest and Steel Protection are viable too
Weapons
Chaos Blade
Estoc
Rapier
Silver Knight Spear
Quelaag's Furysword
Balder Side Sword
Great/Lifehunt Scythe
Flamberge