well the only downside i see to sprungbags is they only offer the 6 micron bags, while bubblebags offers 8. but, if im going to do something, im going to do it right. however the sprungbags are an incredible deal, so one has to ask, should i sacrifice two possible grades of hash to save 100 dollars on something im going to use countless times, that will pay for itself after a few washes. the obvious answer is bubblebags, since you cant go back and individually order the bags your missing later on. BUT...i went and checked out what micron sizes sprungbags is missing that bubblebags has.
sprungbags 220u, 160u, 110u, 73u, 45u, 25u
bubblebags 220u, 190u, 160u, 120u, 90u, 73u, 45u, 25u
now heres where i have the hangup (because honestly id like to save some money if its a smart decision in the long run), i work with alot of medical patients and caregivers since i live in a state in the us with medical cannabis. and what i hear and have seen with my own eyes, is the most important micron grade is the second to finest. it gives the largest yield of the finest quality. thats the 190u with bubblebags. now with sprungbags, that stage of micron is 160u. now if you are in it for medical purpses, or even just trying to get the best results, 60u is a largely significant drop on that stage!!! were talking about going from 220u to 190u, or 220u, to 160u. that middle micron (190u) is actually a big deal. sure, it will have a 30% larger yield in that bag, but it will also be 30% less refined than the bubblebag version. sprungbags also drops the micron down by 10 on the next stage, which isnt super noticable, but its still a decrease in potency. and the entire reason of spending that kind of money and running large quantities of costly material, is to get the absolute best results you can get. sprungbags also have a micron drop from 110u to 73u, which is a significant drop, seriously. bubblebags go from 120u to 90u, then to 73u
so in my non expert opinion, if you want to save a few bucks go with springbags. you will end up with quality results, provided the materials the bags are made from and the silkscreens are attached well. BUT if your'e like me, and want to get the best hash you can, you want bubblebags.