See the results of this poll: Phineas vs. Thaddeus
Respondents: 31 (This poll is closed)
- Phineas : 22 (71%)
- Thaddeus: 9 (29%)
This is so hard! I like both full names equally but I think nn [name_u]Finn[/name_u] pushes [name_m]Phineas[/name_m] in front for me.
I voted for [name_m]Phineas[/name_m], it’s such a handsome name and I want to like [name_m]Thaddeus[/name_m], but all I hear when I say it out loud is Fattiest, which isn’t that great of an association. But that’s probably just me
@libelluleclaire That made me chuckle! I think “fattiest” is less of an issue in a British accent, but I can see where you’re coming from 
[name_m]Thaddeus[/name_m] 100%! I find it much more masculine and strong-sounding than [name_m]Phineas[/name_m], and I like the nickname [name_m]Thady[/name_m].
Ooh, I like them both! I do prefer [name_m]Phineas[/name_m], & love the nns [name_u]Finn[/name_u] & Finney. [name_m]Thaddeus[/name_m] is nice though, & I love the nns of [name_u]Teddy[/name_u] & Thax. They’re both unique, yet recognizable. I do feel like [name_m]Thaddeus[/name_m] maybe grows up a little better. [name_f]Hope[/name_f] this helps. 
[name_m]Thaddeus[/name_m] makes me think of the character/thing from American Horry [name_u]Story[/name_u]. Not only does [name_m]Phineas[/name_m] lack that awful connection, you can you the cool nn Phin or [name_u]Finn[/name_u]. So definitely prefer [name_m]Phineas[/name_m]!
I love [name_m]Phineas[/name_m] and Ferb, so my vote overwhelmingly goes to [name_m]Phineas[/name_m]. I adore the name, the character, and the nickname [name_u]Finn[/name_u].