Yeah, there can be too much of a good thing.
I make VZ's SC Caramel Mocha as one of my ADV juices, it's soooo yummy.
But...
Imagine eating even the best foods EVERYDAY...you'd soon burn out on 'em.
Variety is good. And, I always have a glass of water near, no matter what else I might be drinking.
Changing the atty used can vary the flavor too.
I tend to drip the CM and keep something more generic like an RY4 in my tanks. That way, the CM is more like a treat. However, I do keep CM in one of my Genisis atties, as it has a different taste than anything else. The friend who first turned me on to VZ CM has always used a genny for it. =)