For me, it's definitely Itsuka no Summer. It's a good, happy song, and it the melody of the song fits Aiba. It lifts up your spirit when you hear it, makes one happy, just like Aiba-chan, ne.

I do not have doubts, which more I have liked has been Itsuka Not Summer

i almost voted for Itsuka no Summer (my favorite solo for the longest time), but I guess after digging into old Arashi solo stuff, I'm into Ai no Arashi now.

Aiba must be the unofficial "rocker" of the group? (with all those mild(?) growling and stuff)

For me it's Friendship because it's the first Aiba solo I heard. It's one of my favorites now!

My favourite would have to be Itsuka no Summer since its the first solo I've heard of him. I found out about it in the credits of the compiled clip of 'Aiba Speaks English' in YouTube. And although, I've heard a few more of solos, Itsuka no Summer still has to be on top. The music in the background, actually makes you think of summer and the lyrics of the song is really awesome.

I voted for Itsuka no summer. Its so genki and his performances is so cute too. I also like his Hello Goodbye too. The lyrics are just to cute!!

i voted for itsuka no summer..because i like the beat and his dancing on that song
but all his solo are wonderful..well he is adorkable fumi... no woder im inlove with hin

I just love Aiba's Itsuka no Summer. It has a very summer and vibrant feeling to it. It's also high addictive, listening to it. I like it especially the part at the end where he kisses his palm and held his hand high~~

However, his Time solo 'Friendship' is beginning to grow in me. The way he potrayed the song has a lasting impression in me. Aiba-chan~~! *waves* Anata wa saikou!!

Everyone really likes Itsuka no Summer or Frienship, and they are good, I will say....but have you actually listened to Secret Eyes? OMG, that song is on repeat right now! Aiba's voice in this song is amazing!, and breathy and ohoohohhhohoo!....so many others things!!!! Especially when he hits the high notes "iijanai?" Its great....sigh...so great! I'm really getting worked about this!!!! I swear he's singing to me!!!

Friendship forever!!!!!!

i had to choose between itsuka no summer, friendship or yokaze. and i chose yokaze because i like the concert perf! but i haven't heard all his solos though.

I haven't listen to all his solos yet, but I really like friendship together with the performance. It was so cute. And I like Aiba-kuns voice in this song.

I have two favorites, it's unfortunate that I can only vote one.

I like
Friendship and Itsuka No Summer


edit

Reading much of the approval of the people here, I think one of Aiba's best songs sure is Yokaze... I like the genre and I think Aiba's voice is perfect for the song. Turning into one of my favorites.

He's not the best singer in Arashi but I love his solos the most, well next to Nino's, that is.

I really like Itsuka No Summer the most
out of whats on the list, but Friendship is
also a good one.

My absoloute favourite solo by Aiba has
to be Hello Goodbye off the Dream "A"
Live album though. It's really fun.

=D
xxx