LDPE is permeable to oxygen so for long term storage it's not great. In saying that, you probably get more oxygen in through the 'seal' (that goes for glass too) than what would transfer through the walls of the container.

Amber/brown glass blocks most UV light which is a good thing.

LDPE (other plastics also) can absorb some flavours and you'll have a hell of a time getting them out. On the other hand they can be cheap enough to be disposable.

I just go for regular old LDPE squeezy bottles for mixed juice. In an ideal world I would use glass for my nic and concentrate storage but at the moment I'm running with PET as they're far cheaper here.

I use cobalt/blue glass bottles with some foil tape as a label. Just looks nice.

I prefer glass for the pseudo healthier reasons, but all my glass bottles regardless of source are crap. They leak. Or the rubber lets too much flavor volatile escape and it becomes muted too quickly.

I switched back to LDPE for now. No leaks. Easy to squeeze and drip. Way more exacting on drop size, too, it seems.

I go with plastic. about 99% of the time, I use 15ml bottles I bought off ebay. I throw them away after one use. Until I get something that I reproduce a few times, I make 10ml batches.

I bought the bottles from here

Nothing really scientific, but I mix my batches and store in glass bottles (blue from wizard labs). Than I keep one of those with me either in my laptop bag or my briefcase. For my dropper I use a small plastic bottle that I refill till it falls apart. But yeah I don't use plastic too much because of how quickly I ruin them.

I use 60ml glass vapor chef bottles for my own stash, and plastic bottles to sell juice to friends. A lot of glass bottles have problems with leaking or not closing well, and they're also expensive. On the other hand, they're easier to clean, nicer looking, and will last a lot longer if you're not clumsy. Do whatever you want, just make sure to get good glass bottles.

Current $13.89 
   High $15.44 
    Low  $8.94 

I'm using Amber and Cobalt glass bottles with drippers from Mountain Rose Herbs. These are the only glass bottles I've found that don't leak like hell. I bought some clear glass ones from Amazon and the dripper lids are shit and back off to the point where it might as well not even have a lid on it.

My husband likes the plastic squeezy bottles.

I would like to see scientific proof from those claiming ldpe or pet plastic is unhealthy. I've done the research and can not find any proof to such claims.