Favorite is kinda a hard one for my to answer auhhhhhh but I think it'd have to be Aussie Lemonade? There's a handful I could go for at any time and I think Aussie would have to be at the top of 'em. I was sooo sad yesterday when we went to the store to get some and they didn't have any. :[ (Could have went to see if one of the other stores had it in stock but didn't wanna bother.)
Honorable mention to the Raspberry Tea Rehab tho I'm still so mad they discontinued it ??

Least favorite hmm. I will say I don't drink any of the pineapple/ watermelon flavors bc I do not like how their artificial flavors taste. They're both too sweet in an overwhelming way.
Out of the ones I do drink tho mmmmm I think Ultra Violet is pretty forgettable. Grape sodas & etc. I'm not super big on tho unlike watermelon/ pineapple I don't hate the flavor. It's just kinda a "I gotta be in the mood for it" thing and usually I am just not in the mood for it. I'm a big orange soda/ drink guy instead LOL.