This is only my opinion so it's worth about 2 cents, but it seems to me that after using the same juice (no matter what it is) for a long period of time, the flavor seems to become much less noticable. I think it may be because our taste buds get so overloaded with those particular chemical compounds that they simply no longer send as much of whatever signal they usually send to the brain, and we don't get the taste sensations we once did when using it. What I do to combat it is to change the flavor frequently and I keep about 15 different tanks ready to use at all times. YMMV, good luck. I will say that it definitely works for me, and whenever I come back to a flavor of juice that I haven't used for a day or two, I can taste the full flavor just "peachy"! Alien Vision's Hype is one of my favorites, it's a peach and melon flavor.