Those are pretty cool. Nice seal job! Ill bet the buds stay very fresh. Ill have to give them a try. From what I have been reading lately, hard plastic is better for you then glass and fine china as far as drinking and eating goes. Glass is liquid and never completely hardens. Therefor some think it seeps more bad stuff then hard plastic does. Who Knows!
Haven't heard that one OG. I will say, I have used a few of these and I like them. I haven't stored anything for a real long time (greater than a few months) but they work awesome.