We purchased the FoodSaver 4800
https://www.foodsaver.com/vacuum-se...MIsJCitp6e5gIVA1YMCh3PZQ4GEAQYAiABEgIQcfD_BwE
When I bought it for my Wife I got her all the pre cut bags, rolls,vacuum storage containers and spare parts I could find on the FoodSaver website.
They have containers with a little rubber flap check valve that a pull out multi use suction hose device will pull a vacuum on sealing the contents of the container. This system did not work so well as the rubber flap did not seem to last.
They have other containers that just use the a plastic nipple to apply vacuum to a hole of a turn wheel that allows use of the marinade button on our FoodSaver which works great these containers are clear plastic with clear lids and marinate meat like nothing else I have seen.
I bought many spare parts like I said ( to save on shipping and to take advantage of a discount promotion they once had). One of the spare parts was the cutting blade and slider for the bag rolls ( which we use on potato chip and cereal bags and other bags also) we found the cutter to become problematic if you allow any tiny bits of plastic to build up in the cutter area some of these bit can make its way into the cutting blade making it harder to cut bags. ( meaning we thought we had a dull blade but it was just jammed up with plastic bits that were easily cleaned out)
After about two or more years of owning ours I just had our machine apart to service it as it was not performing very well,
Turns out I had a few issues, first the seals both upper and lower needed to be cleaned, bits of debris were preventing a good seal ( I will replace the seals anyways ) the manufacture suggest the seals get replaced once a year. I think they will go much longer if you keep them clean ( I used rubbing alcohol and cue tips)
Deep inside where the bag gets sealed was a multi spring loaded flaps ( I think they are bag detection flaps ) they looked deformed on closer inspection I found that some how a cereal bag or chip bag must have snagged on it causing the two sided flapper to get dislodged on one side ( which sometimes made bag detection hard )
This flapper deal was sticky with juices from meats and other stuff we sealed which may have contributed to why it was coming apart.
I very carefully removed the flappers ( no information on this was found online ) making sure not to lose the tiny springs ( two of them) and cleaned them with soap and water using a tooth brush . once clean and dried I was able to tell the flappers hinges just got pulled loose and I was able to carefully get them back in place luckily nothing was deformed.
after cleaning the FoodSaver it performed like new ( I thought I may need to replace it )
Lesson learned these thing need maintenance ( like taken apart and cleaned ) once a year or more depending on use.
As far as bags on storing whole cooked foods ( I cannot say I have ever done that ) I did recently smoke a pork Shoulder for pulled pork and sealed portions for two into individual bags for reheating via Sous Videwhich worked out great the meat was still tender and delicious right from the freezer to the pot of hot water
When we seal semi wet items like raw meats we make sure to make our bags extra long for a chance to reseal if needed and to give the juices a place to go while the vacuum is being applied to the bag ( obviously we still have not mastered it because we did get some of this type of juice inside the sealing section of our FoodSaver )
One thing I noticed is the factory bags obviously have factory sealed edges that are much thicker than what my device will do. a trick is to seal the bag or roll then slice off a tiny sliver of the bag with the cutter then seal it again and you will end up with just as thick of a seal as the factory.