I've heard people often have problems with the pasta poking holes in the mylar.
On thinner mylars and some pastas aka spaghetti could "poke" through.
I store elbow noodles. for the simple reason that a) its a 5+ lb bag at Sams b) round edges dont tear mylar. If y our running 7mil mylars you shouldnt have any issue.
This is what i have stored in mylars( some are experiments)
pasta( see above)
beans(mostly pinto's and black beans with 1-3 buckets of assorted beans)
sugar ( to keep it semi dry- no O2's )
coffee whole bean and ground.
salt( no mylars just in the bucket)
drink mixes- these are things like tang. Also have the single use "drink mixes for booze drinks". They were cheap, full or sugars,salts etc. Margaritas,mojoito's, comsom's so the wife snagged up about 100.
my mantra on this has been . if its dry i can pack it. of course price per pound dictates if i pack it or not.