Oh, thaya -- I understand that feeling so well. I made a bunch of wrong turns in my first 8 or so purchases from various e-liquid vendors. Bought large bottles before having tried them, didn't research their specialties, didn't look at any reviews, just bingo-bango'd around. Mistakes, expensive!
But I suddenly, recently, got into a great zone of having done better research (I know that I won't agree with every review of course, and fan faves can sometimes be failures for my taste -- but accumulating a bunch of positive and negative reviews and interpolating my tastes into them, well, that helped), buying SMALL bottles or samples to start ... I've found some awesome new vendors and feel pretty close to narrowing them down to a few go-to juices and vendors.
It's amazing, isn't it, that some vendors can do a home run on a few flavors, yet others can be really flopalistic to any one individual's taste!
I have found that I am a coffee/cocoa/tobacco/dessert vape person. I'm not very much a fruit vape person, it turns out, which is weird because in foods I LOVE fruits.
I've also learned that I LOVE using the little nano vision-type clearomizers. As far as I know they can't be rebuilt or have wicks replaced, but they're so nice and small and inexpensive that I can flavor away, refill or change flavors often, and I LIKE doing it that way. My bigger tanks have all let me down in one way or another so far, leaking, etc. I still haven't jumped into the water on using my dripping atomizers -- I have 'em though!
Anyway thaya, don't give up on the flavor search. If your fave flaves categories are anything like mine, pm me and I'll pass on the ones I've found, fwiw. I've gotten so I never spend more than $30 or so per order, and have tried enough vendors now that I'm feeling pretty good about having covered quite a few bases (there will maybe always be a few more to try, I'm sure) and if I stopped trying others right now, I would happily have about 20 truly delicious (to me) favorites.