I found that some juices that I liked a lot when I first started vaping ended up tasting strange/bad to me (RY4 for example) while others that I didn't like in the beginning (555, Green Tea) grew on me and became my favorites. I kinda freaked out when these changes started happening... scrambling for something that tasted good... often going from one flavor to the next until everything tasted strange (!). Now that my taste has stabilized (if you will) I am enjoying vaping even more than when I started, and like Shortstuff, can now detect even the slightest differences in 555 juice (my all-day vape).