I think a lot comes down to individual taste. I started with JuicyJuice (now out of Buisness) and tried a dozen other vendors my first year vaping and nothing was as good. Went to DIY with TW stuff because JJ was always out of stock. Been DIY for about 3 years, but was in a rut and still with a VERY high, 36mg strength, so I decided it was time to try some vendors again. MBV, Highbrow, AiV, The Ploom Room, and a couple others. I liked nothing from AiV or TPR. I have 5 or 6 flavors out of 20 from MBV that I love but only two of the 20 that I wont touch agian. My fav is the Crem Brule with cinnimon added, from Highbrow. Problem is I ordered a 30ml bottle to resupply, and it does not taste the same as my first one.
I'd guess that I've ordered 70ish flavors in the last 5 months and of that 15 or so ill never touch, 10 or so I can be happy with for a week strait as an ADV, and the rest I have no issues rotating in. I always have 10 tanks full of different flavors and rotate them around throughout the day.