I went for the Cleric's Robe before Thyrus +1, mainly because I got both at the same time. I obtained my Thyrus on Sunday afternoon, capped my mythology, and got my Cleric's Robe. Monday morning came around and I pretty much capped my mythology again. Within two weeks I'll have my Thyrus +1, so its not that long of a wait. I have an HQ Vanya Hat of Healing with 5 materia affixed, so I never did the whole DL body thing. With a Light Party I have 4,000 HP and 4,350 MP it's pretty sweet imo. I'm a newb to this game, I've only been level 50 for a month now so I'm still learning myself. :)
