You'll get the most longevity from vacuum sealing and freezing. The fridge will be ok if you can't freeze them, but I would freeze them as soon as you can. If you choose to vacuum seal, make sure you get a quality vacuum sealer. I've tried two different products, Ziploc Vacuum Bag System and the equivalent from FoodSaver, and they're both crap, at least for hops. I'm not speaking ill of FoodSaver in general, but they're little handheld vacuum and zippered bag are crap. I'm sure their higher end system works well, but I don't know from experience.