hi Joe. The "juice quest of 2015" as I call it for myself has been one of the most frustrating challenges I have experienced in vape. There's only 1000 different flavors to try, I have 900 more to go. What I've noticed is that my taste buds have changed in the 3 months I have been vaping. Flavors I don't normally care for are now appealing, and flavors I really liked in the beginning aren't my favorites. I have yet to find the ADV (all day vape) but I have found a few LTV (long time vapes).
The best advice I can give is to order sample packs from different vape suppliers hoping you get one that fits. Trips to local vape shops to sample from their supplies are also another adventure you can try. I wouldn't recommend fixating on the "perfect" vape, but find ones that work until you do stumble across it.
Good luck in your journey.