That really depends on your target population. Some companies intend to produce for the masses, they use cheaper plastic packaging. There are specific containers to use if you plan on doing HPP. If your concept is non-HPP and you do fresh pressed, raw product, I see a lot of companies (and we do this) use glass bottles (8/16oz/32oz) and do a bottle credit program. This gives customers discounts for bringing bottles back, confidence in being eco-friendly (which makes them further trust in your brand) which saves you $. We also have cups that people can get at a discount 1) bc they will never ever return their glass bottles and don’t want to wash them 2) There are better recipes that people prefer in cups (i.e. banana blends, protein blends like whey, kefir, things that oxidize fast or make the blend super fluffy!).
Maybe test it out and see what goes over well. We find that as more people get educated, they demand glass bottles especially if your product is of high quality. The packaging should reflect that.