I normally have Donald because he heals you but then ill sometimes change to goofy

Same. I normally keep Donald around for the health benefits. 

In KH2 I used goofy because I loved using valor form.

I usually kept Donald and Goofy except for certain worlds like Halloween town and atlantica where I got rid of Donald.

Both. they are my pals. I prefer my Wondernayns, but I can't do it without my friends in my heart. heh.

I all ways have in Goofy then depending on who the world friend is i get rid of donald or keep him. but in twtnw i have goofy and riku always. 

I like to keep Donald, his magic is a lot more helpful than Goofy's shield combat...

Goofy.

Donald because of reasons lolz

Both. they are my pals. I prefer my Wondernayns, but I can't do it without my friends in my heart. heh.

Oh the feels... But yeah, you done said it word for word

I'll keep Donald so he can heal me, but sometimes I'll be beeping and the jerkface won't heal me...and when I decide to heal, he'll suddenly decide to heal me. DAMN YOU DONALD! >:U So then I'll remove Mr. Useless and bring Goofy back to my party. Huhu, but I still love them both. σωσ

Donald. Since his magic is useful.

Donald and Disney Party Members for KH1 and KH2.

I also used Goofy most, because my favorite Form was the Valor Form

I'd prefer to keep Goody out of the party if possible, but since i KH1 we need him for Trinities and in KH2 we can make all the Drive with him in the team, so I just tend to bring him and Donald most of the times.

And like you guys said I always have Donald with me because he can help healing. Not that he does that often...

Both......

Even with other party members.

Well, I hardly heal myself, so I have no choice but to have Donald in the party

i always have Donald and Goofy as my party members, the only time i don't have them in  my party is when i switch out either Donald or Goofy in battle just to use the World party members's limit attack, then i switch them out immediately, so between KH1 and KH2 Donald and Goofy are my party members 99% of the time

I tend to use Donald since he can use Cure as opposed to wasting potions, but I honestly prefer Goofy's kind yet silly personality- if only he could use magic!

In the first kingdom hearts I always kept Donald and Goofy in my party, but in the KHII I kept Donald most of the time, but just till I saw the reaction comand of the invited character to the party of each world.

I used to have Goofy back when I didn't really pay attention to stats and just liked Goofy better as a character but now I usually use Donald because his magic is stronger than most of Goofy's attacks

I normally keep Donald, but in some worlds, I keep both Donald and Goofy