Tobit sounds awkward to my ears. For some reason it really reminds me of the word "phobic" too.
Tobias is worlds better, imo. Tobit looks like a Latin third person present tense verb form.
Jerome, however, is very nice. I prefer
Jeremy, but this is good too.
Jerome ConradJerome EdgarJerome WesleyJerome AmbroseJerome AugustJerome DarcyJerome DimitriJerome EliasJerome FalkJerome Wolfe