I haven't read
the Brothers Karamazov, isn't that awful?
Alexei is a fine spelling too, I'll think about it.
As for
Dmitry, that is my grandfather's name and my brother's mn, although they use the spelling
Dimitri in English.
Vanya and
Alyosha are great. I love all the nns for Russian names, Vanechka, Vanka, Alyoshenka, Alyoshka. :)