Best ring set after unlimited?

if you're playing a xenon, the evolving ring 1 2 and 3 set are going to be damn useful

just cause
y'know

EVO 1: Effects: ATK +5, M.ATK +5, STR +7, DEX +7, INT +7, LUK +7, HP +150, ACC +5, Avoid +5, Hands +5, Speed +5, Jump +2, DEF 100, M.DEF 100
EVO 2: Effects: ATK +5, M.ATK +5, STR +7, DEX +7, INT +7, LUK +7, HP +150, ACC +5, Avoid +5, Hands +5, Speed +5, Jump +2, DEF 100, M.DEF 100
EVO 3: Effects: ATK +10, M.ATK +10, STR +10, DEX +10, INT +10, LUK +10

20att
72 effective main stat

hell, even without potential, three evo rings and a 6% int tempest ring are more than enough for me.
I can't justify sinking that much nx into something untradable, y'know?