ARENA 01:
[Hecate] Kagura Saten Ruiko
ARENA 02: Hiiragi Kagami Lala Satalin Deviluke
[Ryūgū Rena]
ARENA 03:
[Hirasawa Yui] Kuchiki Rukia Kushieda Minori
ARENA 04: Gasai Yuno Kaga Rin
[Tomoe Mami]
ARENA 05:
[Iwasawa Asami] Morishima Haruka Reki
ARENA 06: Kisaragi Chihaya Wendy Marvell
[Yuzuriha Inori]
ARENA 07: Asahina Mikuru Hanekawa Tsubasa
[Suiseiseki] -->
Tricky one for me, as I like each one a little bit but neither is personal fave. "Desu" meme ultimately was decisively for me. 
ARENA 08:
[Isayama Yomi] Konjiki no Yami Okazaki Ushio
ARENA 09:
[Kuronuma Sawako] Last Order Maria
ARENA 10: Akaza Akari Haqua du Lot Herminium
[Sena Airi]
ARENA 11:
[Kaname Madoka] Shinomiya Ayase Shinonome Nano
ARENA 12:
[Oshimizu Nako] Tōwa Erio Ueno Kirika
ARENA 13: Enma Ai
[Hirasawa Ui] Sakurano Kurimu
ARENA 14:
[Furude Rika] Ikaros Uiharu Kazari
ARENA 15: Illyasviel von Einzbern
[Kinomoto Sakura] Shinku
ARENA 16:
[Amami Haruka] Irisviel von Einzbern Shinonono Hōki -->
Close hard call between Haruka and Irisviel here. But I think Haruka needs the love more.
ARENA 17:
[Anjō Naruko] Suzutsuki Kanade Toshinō Kyōko
ARENA 18: Matsumae Ohana
[Miki Sayaka] Nakagawa Kanon -->
Hardest vote for Sayaka I've made thus far, since Ohana was here.
ARENA 19:
[Fate Testarossa] Kawasumi Mai Shiina Mafuyu
ARENA 20:
[Fujibayashi Kyō] Hanato Kobato Kanzaki Kaori
ARENA 21:
[Holo] Hyūga Hinata Ryōgi Shiki
ARENA 22:
[Amaha Miu] Fear Kubrick Horizon Ariadust (P-01s)
ARENA 23: Hoshii Miki Hotogi Shirayuki
[Shiomiya Shiori]
ARENA 24: Konoe Subaru
[Shiina Mayuri] Takakura Himari
I'm glad I got into
Mashiro-iro Symphony and
iDOLM@STER. I'd have more abstains if not for that. That being said, I think I know what was iDOLM@STER's undoing here. Just too many girls, with neither one really getting a lot of "headline" treatment. Haruka was kinda the main girl, but not by enough to really stand out from the crowd within her own show.