Here are some of the personal favorites of the Super Junior members that they have posted on SNS. This list consists of the active members right now. 

First Album: Super Junior 05

Kyuhyun - "Believe" and wrote, "The melody, the lyrics are excellent".

Leeteuk - "So I" and wrote, "It's a song with a lot of 'likes', so I like it too".

Ryeowook - "Way For Love" and wrote, "The first song that I practiced choreography for after coming into SM"

Heechul - "Believe" also and wrote, "The first song I wrote lyrics for"

Second album: Don't Don' t

Kyuhyun - "Disco Drive"

Leeteuk - "Our Love"

Ryeowook - "Song For You", wrote : "It was difficult because I recorded it when I had a horrible cold T.T"

Heechul - "You're My Endless Love"

Yesung - "Mirror"

Third album: SORRY, SORRY

Kyuhyun - "Shining Star", wrote: "Memories from Super Show!"

Leeteuk -"SORRY, SORRY", wrote: "The song that opened the door for K-Pop".

Ryeowook - "Monster", wrote: "It has its own appeal, and it's a song I personally like very much".

Fourth album: Bonamana

Kyuhyun - "Your Eyes", wrote : "It's my first duet song so I like it!"

Leeteuk - "My All Is In You", wrote : "I've always wanted to sing it in concert"

Ryeowook - "Coagulation", wrote : "The arrangement is new, and the mix was well done, so I'm satisfied with it in all aspects."

Heechul - "One Fine Spring Day", wrote : "Ryeowook's grape candy voice is great!"

Yesung - "In My Dream"

Fifth album : Mr. Simple

Kyuhyun - "Storm" , wrote : "You can feel Kyu's "storm"-y vocals."

Leeteuk - "Andante"

Ryeowook - "Opera". wrote: "You can feel its strength in concert, and it's better with the choreography!"

Heechul - "Oops!!", wrote : "It's the kind full of air song that only I can write!

Yesung - "Sunflower"

Sixth album: y, Free & Single and SPY

Kyuhyun - "Bittersweet"

Leeteuk - "Only U", wrote : "The song I wrote in tears right before enlisting"

Ryeowook - "A 'Good'bye", wrote : "My favorite Suju ballad! The parts are well-divided, and the hyungs sang it very well."

Seventh album: MAMACITA and This Is Love

Kyuhyun - "Mid-season", wrote : "A song that makes you want to travel."

Ryeowook - "MAMACITA" , wrote : "A song where we had to sing the high notes without Yesung hyung! I practiced it live very many times... I wonder how it'll sound if Yesung sings it!"

Heechul - "Evanesce", wrote : "My life's song, which gave me back my confidence in singing."

10th anniversary special album: Devil

Kyuhyun - "Devil"

Ryeowook - "Love at First Sight"

Yesung - "Simply Beautiful"

Repackaged special album: MAGIC

Kyuhyun - "Magic"

Ryeowook - "Dorothy"

Heechul - "Sarang"

Yesung - "Magic"

So, do any of your favorites match with theirs'?

Here is a list of my favorites from each album:

Super Junior 05: Believe (It matches with Kyuhyun! and Heechul.)
Don't Don: Disco Drive (Again matches with Kyuhyun!)
SORRY, SORRY : She Wants It and Club No.1 (Can't decide)
Bonamana: My Only Girl (IDK why I like it but I just like it.)
Mr. Simple: Superman (It's like my anthem. I can't not like it.) and Walkin'
y, Free and Single: Butterfly (Too much fun to listen. I always dance to it when I listen to it.)
Mamacita: Mid-Season (Again matches with Kyuhyun!) and Midnight Blues (I like both of them equally)
This Is Love: Don't Leave Me (Siwon composed it! No way will I choose any another song!)
Devil: Alright (it was Don't Wake Me Up before but after knowing the meaning of the lyrics of 'Alright' I could help but cry. I always remember the members when I listen to it.)
Magic: Magic (Agian Kyuhyun! and Yesung too!)

After comparing the list above, Kyuhyun does have a good taste in music... just kidding... I have a good taste in music.

Anyway, what's yours? Be free to tell me!