I agree Teresa.....
But just like everything else.... mileage may vary considering the subjective nature of eLiquid. ( Much like food recipes ! )
Some will love it..... some will hate it...... but most fall somewhere in-between.
I was cured of my "over saturation of concentrate" early in my DIY ventures.
My first order was TFA ... Blue Berry Extra, Ry4 dble., Coconut Extra, and a few other fruit flavors.
My Very 1st attempt was Blue Berry @ 5%.... Very Weak ! ( Add More ! )
Rinse and repeat a few times until I was up to 18% concentrate, but it hit a ceiling somewhere along the way and Never got much stronger than 3 adds ago.... so I settled on 15%.
Next up.....
Coconut Extra !
Well Blue Berry
Extra needed alot, so started the Coconut
Extra @ 15%.
It honestly was the NASTIEST, most unpleasant thing I
EVER vaped !!!!!!
It took 6 months before I could work up the courage to do something with it..... just the thought made my eyes water !
Started using the 15% mix as a concentrate and realized the nasty chemical hit I was getting had vanished, I could just barely taste in in my recipes.... just the way I wanted it to be !
Still havent finished the original little bottle I bought, as now I dilute it 9mls pg / 1ml Coconut Extra and I can finally use and measure it with confidence.
Every Flavor has its Sweet Spot........ Some are more forgiving than others and will gradually change as you up percentages, and can be used in a broad range of concentrate.
Others not so much...... and can get nasty by just adding 1% or less.
I have some tobacco flavors that most consider Strong/Dark Tobacco and really not cared for by many.
But @ TINY percentages I get all kinds of nuances that I never noticed when it was @ 1% and over powering !
All just MHO................