I had the same problem - people said my taste would come back - but after vaping for over a month now - and buying more and more e-juice from vendors that got great reviews - and even after asking for extra flavor - I still couldn't hardly taste them. I realized I would have to add extra flavorings myself
I found the DIY discussions (where besides great tips I found out you could go to the ez-sweetz website for a free sample(you need a liquid sweetener based on sucralose - Tasty Vapors and PA also said sucralose based sweetener - though not as concentrated as ez_sweetz) and Perfumer's Apprentice (a maker of flavorings) - I learned how easy it is to doctor the e-juices I had bought to where I can not only taste them, they now taste great!
I find I sometimes have to add up to a third of the volume of the bottle of e-juice with a complimentary flavor and a whole lot of sweetener to get a flavor strong enough for me to enjoy - but these flavorings are fairly inexpensive - ($5 an oz (30 ml) at Perfumer's Apprentice website) so if like me you can hardly taste your e-liquids, it is easy to save your e-liquid investment and really enjoy the experience.