Reached the ending, it was kinda fun, albeit with some bumps in the road *Glares at sphere break*. But I enjoyed it nonetheless. I loved the dressphere system. Now I am currently doing NG+ and I just did the fiend tales for Killer Hound, YSLS-Zero, and Machina Panzer to get the Adamantite and got it on my Tonberry. Lil' guy tanks hits like a champ!
Also my team set up for the Fiend Arena is Chocobo, Red Elemental w/ Flare and Ultima courtesy of the Megiddo GG, and my Tanking Tonberry. They all have White Wind, and Full-Life; my Tonberry and Chocobo also have Moogle Curaja from the Valiant Lustre GG. I am grinding it up there for some reason, though once I get the Mascot Dressphere from Youth League's Tournament, I will go back and try to get 100%. I have heard it is a pain in the ass though.