Absolutely love the series (mainly the anime, I just played the first mobile game years ago), watching Hasunosora's fansub right now.
My favorite character from μ's is Nozomi, but Soramaru is definetely my favorite seiyuu. And she's super cuteにっこにっこにー !
Yup, both me and the overall fandom agree Sunshine surpasses the first one, they got a better hang of building the characters and episodes, but kinda repeated some tropes. Nijigasaki is a weird one, like a spin off, and Superstar got a slow start but ended up being pretty nice. I don't have an opinion on Hasunosora yet, but not having an anime is a big downside.I have to confess I only finished the first season+ ova's. I dropped the second season after three or four episodes because I got distracted with some other series release. I should really go back and finish it including the ova's. I guess that's what I'll do after I finish my Nuku Nuku marathon.
Also what about Sunshine? Is it worth checking out?