I use Pink/White 9 and 10 and any alt with blue/green/white/pink.
My favorite is Alt 2 silver one number 8 beautiful color lol.
Alt 1 N.8 (Purple bra)
Do i have to say anything else?
Ok, sometimes I use the pink/white original, but just sometimes 
The black and red one are my favorites. The blue one I also use sometimes.
I dig Alt 2 #9 (Pink) and Alt 1 #2 (Orange). something about that color with the pink fuhajin kick looks sick
Original 6 or 4, mainly.
Default costume 1, Alt 1 (the one with the purple top) and default alt 2.
Original color 1 24/7 356. Unless there’s a mirror match in which case I just take what’s available. Call me boring but I always play my characters with their original colors.
Don’t really like her alts. She looks weird with those tiny feet of hers. I’ll agree with most on here and say that IF Capcom puts in the effort and releases new costumes with USFIV, (unlikely and if they do, it’ll probably be that garbage from SFxT) I’d really love to see her with dat hair down.
highfives
They got the coloring right the first time and there’s no need to mess with perfection.
Original: Colors 3(Red/White/Black) and 8(Black/Hot Pink)
Alt 2: Colors 1(Black/Pink) and 3(Red/Black)
Original 4 (blue) every single time I can. It’s kind of trademark, despite I’m not that good, I don’t like to have some own records without this color.
I hope an alternative 3 will be good (school girl, urban outfit, classic dobok, …) to plan changing. But I’m really disapointed by the alt 1, I think the urban outfits for cody, Ibuki, Yun & Yang are awesome ; Why a slim jean and court shoes for Juri ? Alt 2 is just hooker stuff 
I love her civi and robes though. All she needs for her alt 2 is gloves…Though I will say this…definitely needs something other then heels. I don’t mind them…but either barefoot or some other type of footwear.
And ger OC with number 1.
Been playing a lot of Juri recently, most probably going to become my alt, if not my main! Generally always using Original 8 (black and purple) =)
Alt 1 5 and OG 6… love Juri in green
Origonal 2, always, forever
Original = 6 and 8.
Alt 2 = 4
Her original outfit is still the best imo.
Can’t hide these pretty feet.
original: blue!
Alt 1: white pants!
Alt 2: Who the hell uses alt 2? O.o
…been a while since I played SF4 so I forget the numbers for the colorings 
Original is the only outfit worth wearing on Juri IMO. While most other characters got really awesome alternatives, Juri’s don’t even tempt me in the slightest! Perhaps in Ultra they’ll be able to tempt me away from Original #8, but until then, its the only option
Original: 2,4,6,8
Alt 2: 4,8
Best colors
OG 5 and Alt 5 all the way, love my EVA/Eggplant Juri