I like
Finnegan alright, it's a little bit to sing-songy for me though, every time I say it I think it in the rhythm of the song
Michael Finnegan http://en.wikipedia.org/wiki/Michael_Finnegan_(song). I really like
Finn as well. I do like
Finlay better just because i don't get a song stuck in my head when I say it. I don't really like
Phineas with any spelling atm.