Favorite Teenage Mutant Ninja Turtle?

[WR91]

The question at hand is who is your favorite TMNT out of the following four:

Leonardo – The tactical, level-headed, courageous leader and devoted student of his sensei, Leonardo wears a blue mask and wields two katana. As the most conscientious of the four, he often bears the burden of responsibility for his brothers, which commonly leads to conflict with Raphael. Leonardo was named after the Italian polymath, painter, engineer, inventor, writer, anatomist, and sculptor, Leonardo da Vinci.

Michelangelo – The most stereotypical teenager of the team, Michelangelo is a free-spirited, relaxed, goofy, jokester known for his love of pizza. Michelangelo wears an orange mask and wields a pair of nunchaku. He provides the comic relief, though he still has an adventurous side. The least mature of the four Turtles, he shows characteristics of a "surfer" type and is often depicted with a Southern Californian accent. He is named after the Italian Renaissance painter, sculptor, architect, poet, and engineer, Michelangelo. His name was originally misspelled "Michaelangelo" by Peter Laird and Kevin Eastman.

Donatello – The scientist, inventor, engineer, and technological genius, Donatello wears a purple mask and wields a bo (staff). Donatello is perhaps the least violent turtle, preferring to use his knowledge to solve conflicts, but never hesitates to defend his brothers. He is named after the early Renaissance Italian artist and sculptor from Florence, Donatello.

Raphael – The team's bad boy, Raphael wears a red mask and wields a pair of sai. He has an aggressive nature, and seldom hesitates to throw the first punch. He is often depicted with a New York accent. His personality can be fierce and sarcastic, and oftentimes delivers deadpan humor. He is intensely loyal to his brothers and sensei. He is named after the Italian painter and architect of the High Renaissance, Raphael.

[Mr EliteL]

You forgot one: Venus de Milo. Nah, don't need to include her really she wasn't in much. Well I know she was in one iteration at least as the fifth turtle anyway. I sometimes wondered where she was in later versions to TMNT going "Wasn't there a female turtle??"

Anyway out of the four, I'll go with who I liked most when I was younger because my current self likes them the same amount. Used to be Leonardo for being the level-headed one, usually the one to get his brothers out of trouble or even going it alone against enemies (I know Raph did that too). Donny used to be my least favourite but eventually each turtle caught up with Leo for me. They're all likeable and awesome.

As I have not seen every iteration of TMNT, my opinion might change slightly per version but I know that the ones I am familiar with (first animated series, second live-action film Secret of the Ooze yep, 2003-Fast Forward, 2007 film) I like all four equally. 

[WR91]

I voted for Donatello. Mikey is funny but Donny has always been my favorite.

[Moonface]

Hard to say since it varies heavily on which appearance I judge them on. While I love the care-free attitude of Mikey, I feel like no one holds a candle to Leonardo in the 2003 TMNT series. I can't remember enough of Rise of the TMNT to decide who I liked most in that one though.