I've never met a
Boris before, either.
My mother is the only person I know who has actually known one in real life, and that was back when she was in high school.
I like
Boris Lev a lot--maybe because I like the name
Borislav, too. :-) The shorter middle names are tending to sound good with it to me. Maybe their length just leaves them with less style to clash with
Boris.
Boris Emil is a great one, too. I love
Emil, and I never thought to pair them together.
Boris Valentin is pretty awesome. I have to say that I think
Valentin is a name with a lot of punch to it. I think that combo makes a nice impact.
Boris Maxim is another from your suggestions that is sounding pretty good to me, too. The length is good, and the M names follow
Boris pretty well, IMO.
Thanks! :-)