Love this and I'm not a big fan of "grape" flavor other than the flavor of real grapes. When I first smelled the INW Grape I was worried because it smells like pure purple artificial grape flavor.
The final juice definitely has a grape profile to it, but all of the extra ingredients really take the edge off and prevent it from tasting too much like purple. Just this weird indescribable wet fruity taste.
I tried this without coolant and it was delicious and then added 1% WS-23. Sometimes the coolant effect messes too much with the flavors (and I'm sort of off Koolada because of that) but it fits perfectly here. However, if you're not a fan, it's still great regular. I keep a tank filled with this stuff and pretty much always have it with me to switch to because it's such a unique and refreshing profile to go to.