Tier 4 Materia rate?

[Simaril]

10 out of 36 tier IV from ilv 55 or 27.777% (usually armorers head, body, hands, legs, feet, Militia OH)

In the other slots I wear:
-- whatever crafted one that isn't too hard to make (ilv43-48) to SB {tier 2 or 3 is welcome for max melds and selling - I sold 8 for 34k each last night }
-- low level (5-10ish) waist, neck, ear, wrist purchased from vendors {tier 1 materia isn't cheap, and I've needed lots to max meld, also it only takes like 100 cobalt ingots to 100%}
-- aetherite rings {I don't convert these but I wear them because the spirit bond bonus is valuable - I get elemental materia too often}


I know I'm mostly talking to myself here, but it's helpful for me to track results, and I hope someone else finds it useful too ;p