I usually decide based on a combination of the voice actor and character design. The character design probably matters a little more. Of course, if I've read reviews for the work beforehand, I'll pick the one whose plot and character setup interest me more.
I'm looking forward to an anime adaptation. It would make me really happy to see my favorite characters and voice actors expand on the story based on the original source material. Besides, an anime adaptation is far less prone to OOC than a live‑action film.
It's just right for someone like me who suffers from decision‑making paralysis. There are still times when I don't want to pick either option, but the more choices there are, the longer I will definitely agonize over them.
I prefer SE on. That's actually one of the reasons I favor commercial releases over doujin works. Commercial titles generally have much better‑produced sound effects, which greatly boost immersion.
My first exposure to otome content was the OVA of Hanayaka Nari, Waga Ichizoku. I liked many of its characters. After learning it was adapted from a game, I dived into this broader world and discovered plenty of titles I ended up loving.
I choose to restart. After such a long gap, my memories of the early parts have faded. Rather than pushing forward while struggling to recall the settings and plot, I'd rather begin from scratch. What's more, re‑experiencing story segments I've already played through might bring me feelings...
I will pick 河村眞人, and 斜陽のアネモネー夫上司が愛しんだ花は咲いたー is my recommendation. I love the composed, mature aura he brings to his performances, especially with a slight sadistic edge. His vocal tone is incredibly elegant.