Everything Girls' Generation, in any form, turns to gold: whether performing as a troupe, splintering off into sub-groups or simply going solo, that SNSD reign just won't let up one decade later.

Girls' Generation-TTS, or TaeTiSeo — the sub-unit consisting of Taeyeon, Tiffany and Seohyun — is one of the most successful side-projects birthed from the massively successful South Korean sensations. From 2012's "Twinkle" to 2015's adorable "Dear Santa," the girls have consistently proven that audiences love the GG girls in any combination.

And, as of this week with Seohyun's Don't Say No, each member of Girls' Generation-TTS has now officially given us a solo effort. But the question is, which one is your favorite?

Place your vote below for your favorite solo debut effort, choosing between Taeyeon's I in 2015, Tiffany's I Just Wanna Dance last year, and Seohyun's newly released Don't Say No. (They're all great, so this is no easy ask — we know.)

The results will be revealed right here on February 15.

Girls' Generation Through the Years: