For the juice there are too many variables.
Multiple flavorings
Nicotine base
dilution with PG and VG
Plus the good companies mix each bottle as it's ordered so something as simple as a half a drop extra or less of a certain flavor component can have an effect.
You would probably get more consistency with Chinese liquids as they are made in big batches. Of course you would be trusting to their quality control. =]
Right now most US suppliers are smaller companies without the volume to make mass batches and not have a bunch of it go bad sitting on the shelf.
Multiple flavorings
Nicotine base
dilution with PG and VG
Plus the good companies mix each bottle as it's ordered so something as simple as a half a drop extra or less of a certain flavor component can have an effect.
You would probably get more consistency with Chinese liquids as they are made in big batches. Of course you would be trusting to their quality control. =]
Right now most US suppliers are smaller companies without the volume to make mass batches and not have a bunch of it go bad sitting on the shelf.