Yeast Infection: Which medicine (OTC) is the best?

There are so many choices for over-the-counter medications for yeast infections, and I understand the difference between the suppositories, creams and wipes.

I'm curious, though, to know which of the suppositories are the best, or how do we find out? For instance, Monistat has the 7 day, 3 day, and two versions of a 1-day that contain different types of medication. Most of them have the active ingredient miconazole nitrate, but one of the 1-Day is tioconazole.

My questions are:
1. Are there any clinical studies that says one active ingredient works better?
2. Any research that says the 7 day, 3 day or 1 day treatments work better?

thanks!