I have tried a few premium juice like mothers milk etc and to be honest i found mothers milk quite sickely and i thought it tasted just like hangsen strawberry milkshake with a fancy bottle and 4 times the price.
I'v tried a fair few premium juices, that I found the I didn't like, or found a cheaper juice with the same flavor profile I liked more.
I comes down to taste being subjective, but this thread can be quite handy for finding a "taste alike" recipe for those premium juices, and then tweaking it to suit your own taste.
I plan next week on mixing up a few my new ones from kandi head (vape 247) just wondered a opinion on 10 or 20 % mixes do fruit take longer than mint do you use less.
I have never used Kandi Hed commentates, but would always recommend mixing up a very small batch at 10% without nicotine to get a idea of how strong the flavour is, and then go form there.
I have a spreadsheet I user, every time I get a new flavour I mix up 10ml at 50/50vg/pg 10% flavour and test it every week for a month and keep a note of how the flavour changes, as some take much long then others to really develop.
And finally what you recommend on steeping time and how you do it like lid of in a cool dark room or in fridge etc. I understand everyone have different preferences and opinions and that's what i am looking for what works best for you. Cheers guys
Steeping is another personal preference issue you will find it hard to get any consensus on. I have found fruits take less then custards, fruits being almost ready to go straight after mixing, to custards taking weeks to become there best, but again, there is no right or who, its what works for you.
Though I think most people will agree to keep it in a cool dark place (a cupboard, rather then the fridge).
I find taking the lid off useful, as it will let any alcohols used in the concentrate evaporate off, this can be speeded up with putting the bottles in a warm water bath, but I do this for no more then 30mins at a time, as you could also weaken the flavour by evaporating off the aroma molecules too.
TL;DR
Mix at 10%, store in a cupboard for a couple of weeks, shaking every day, let it breath for 30 mins ever couple of days, vape, take notes.
(again this is just how I do it, there is no right/wrong, its all about what works for you)