Those extracts are usually not concentrated enough for DIY ejuice so I can understand your poor results with it. You can concentrate it more by evaporating out about 80% of the alcohol then use the remainder at about 5%. Warming it on a hot plate or in a candle warmer will make quick work of evaporating out the alcohol.
If your looking for a vanilla with a creamy note which is more likely what you want for the orange Dreamcycle I would recommend.
Capalla's Vanilla custard.
Vanilla Custard V2-Cap
Wow! Capella's Vanilla Custard is delicious! I'm using it with a smidgen of FW Cotton Candy to tone down the bite of my new OSDIY Blue Raspberry Slush and it's yummy, yummy, yummy - can't wait to try it in my Orange Dreamsicle mix!
Thanks much for the tip.