There are 3 things that affect flavor. Nutes, dry & cure, and plant genetics. IF you aren't drying your buds properly before beginning curing, that will have a significant effect on the flavor.
The kind and type of nutes you use will make a difference. Kind being the brand and type being synthetic or organic. It sounds like you have tried to mix both. It has been my experience that regimens that try to use both seldom work as well as wanted. The reason is that the 2 generally oppose each other on the molecular level. Organics rely on the use of microbe activity within the medium, while synthetics often make the soil unfriendly to the microbes.
I don't know if the nutes you are using is "organic" or synthetic. If you like a good "clean" flavor, then you should go fully synthetic, but if you like more of an "organic" flavor, then go with all organic nutrients. Your soil can be organic or soilless medium and still use organics in either one, but If you like organics then beginning with an organic soil that is good quality, some added amendments, then some good organic nutrient tea for boosting.
If you like very flavorful bud, the OG Kush done organic is very tasty(a little earthy, spicy, incense, and berry) The lemon strains have good flavor if you like lemon. I know the Pineapple Chunk is a very tasty flavor when done organic. The Blue strains tend to taste a little fuelly to me when done synthetic but very dark berry flavors when done organic.
However, everyone's sense of taste is different and what might taste really good to me may not taste all that good to you. I have a friend who likes the more "piney" flavors than the earthy, fruity, or sweet incense flavors which are my favorites.
If you want to go strictly organic but don't want to do all the super soil or making stuff, and you want to keep it simple, then you can get away with Using a good organic soil, than add some "Iguana juice" during veg along with some beneficial microbes like Mychorrizae. You can buy the "IJ" and some "Tarantula" from Advanced Nutrients, then during flower, you can use AN's Mother Earth super nutrient tea. add in a little lime at the beginning of veg then again at the beginning of flower and you're set.