This is the best size of vape juice for value as well as practicality. Today you usually save some cash if you move to a bigger size bottle. Though the 120 ml bottles are big today but they are extremely portable as well as usable on the go. If you feel it to be bulky, you can get a separate 20ml size or 50ml size bottle to get you through a day or even more. It is also easier to steep more juice in a large bottle as compared to a number of smaller ones.