I too use both TPA and FA. As with everything in DIY it just comes down to personal taste. Take a flavor like chocolate for instance, although both companies offer it the difference in flavor and even color can be huge. Each manufacturer has their own spin on flavors. Try buying a few of the same flavors from both brands in the smallest size (usually 3ml bottles) so you can compare to find which one is right for you.
Chocolate is very hard to get right and it's even harder to find a chocolate flavor that works. With that said here's a freebie for you chocolate lovers.
base 35PG/65VG/12 - 18mg (your choice)
Hangsen Chocolate cream 5%
TFA Hazelnut 2%
Hangsen toffee 1%
Now here's the break down of why this flavor combination works.
The hangsen chocolate cream gives the mix it's chocolate base
The hazelnut does not add a hazelnut taste but in fact enhances the chocolate taste.
The toffee does not add a caramel taste but adds a sweeter creamy taste to the chocolate.
The heavy VG base gives a sweeter thickness to the entire mix.
Steep for a week or 3 hours in a UC. Out of this world chocolate vape.