RealNC wrote:I doubt there's non-sweet ones [e juice]
The perceived sweetness range goes from mildly sweet to insanely sweet based on flavor additives and VG/PG concentration, it's pretty unavoidable to have a non sweet e-juice at the moment. You have a number on the bottle such as 80/20 which designates the VG/PG ratio. The first number is the VG concentration which is your sweetener, and the second number is your PG concentration which causes the throat hit or burn. Premium ejuices have higher concentrations of the sweetener (the first number) and is a thicker substance than those with lower amounts of VG, this is a desired attribute in premium ejuices, especially in ones that operate around a tank system. To this is added your flavor and nicotine. Most premium ejuices are at the minimum 60/40, but are usually in 75/25 or 80/20 range, and even 90/10 at the extreme high end. Reducing sweetener will just force the company to add higher amounts of VG which will just feel like you are smoking battery acid and it will be super runny and dramatically increase your leaking problems.
Also, with the nicotine in the ejuice, you have the option to go from 0 mg to 9 or 12 is usually about the highest, 6 mg is around the standard for a regular cig smoker to start at. The higher the nicotine levels, the more that the flavor of of the juice gets masked, but the sweetness is there either way.
As far as flavor profiles go, the skies the limit: fruit juices, candy, bakery such as key lime pie and funnel cake, yogurts, mints, custard, peanut butter, coffee, pop, anything and everything you could imagine. They sell ejuices that taste like name brand cigarettes (allegedly), but I've heard they just all taste like shit. I recently finished off a bottle of ejuice that tasted like a fried soft pretzel with brown sugar and graham cracker crumbs on top that was covered in butterscotch and caramel cream. It was ludicrously delicious.