Baggie or jar

is one better then the other to store you mj in?

Glass because jars keep in the moisture and prevent your smoke from drying out and baggies have a static charge that pulls trichs and won't let go.

if you need to save it for a long time, put in zip lock baggie, vacuum seal removing most of the air possible, and put in freezer. I have weed that is over a 1.5 yrs old in my freezer..i'll pull a nug out of my "relic" weed stash, let it thaw for a few minutes and its fresh like the day i sealed it.

but for personal everyday use store in a glass mason jar or flip top jar that has a rubber seal.

I have found the glass canning jars work best. They have a complete seal. After a good cure, the freezer is a great place to keep it for long term storage.