My Trader Joe's sells 1/2 sized cans for ~$2.50/6 pack. What a very nice find! It has a bright, natural tasting citrus flavor. I wish it was a touch more bitter and a touch less sweet but I understand we're trying to please 'Mericuns so you get what you get.
So here is a very unofficial tasting scorecard based on top of mind experience:
Canada Dry: D+
Has anyone developed something for the Soda Streamers out there yet?
I never splurged for the boutique tonic waters as the pricing honestly just makes me laugh. I think Q and Fever Tree cost more than a premium gin I might mix them with.