Alternative in what sense? I think most, if not all, modern Xperias have both headphone jacks and microSD slots. I'm not sure how they are when it comes to android updates though.
The 1 VI yes, but there's also a cheaper 10 VI. Seems like it is supposed to get 4 years of security updates [1] too, but I suppose only time will tell how that actually plays out.
And the price is around 1400 eur.