I cracked into this yesterday:
Brand: O-Zell Root Beer Float.
Origin: Silver Lake, California.
Purchase Place: Blue Sun Soda, Spring Lake Park.
Sweetener: Hawaiian Cane Sugar.
Review: This smelled like a super smooth root beer, but tasted much different. I can see (taste) what they were going for, but there's an odd off-taste and "sharpness" at the end of each sip. The root beer flavor was just OK, and the fake ice cream taste wasn't great. I get it - this would be a hard flavor to create. But this wasn't that good.
Score: 3.5 out of 10.