Have three Keurig machines (all new to me gifts) and cannot abide what they produce. Guess am spoiled by vac pot brew all these years. But to each his or her own...
Two of the Keurig machines really need to move on as never have nor likely will use. Large one came from a friend who as closing his office before joining mass exodus from city when covid hit. Might haul it out for a dinner party or otherwise have a crowd.
Vac pot gaskets:
Have heard and read about some of them going off, but knock wood all of mine arrived with nice fresh, soft and intact gaskets.
Made mistake of cleaning the metal Flavorseal pot by using coffee pot cleaner and it did a number on the rubber or whatever substance used for gasket. It isn't same as the black gaskets on my Sunbeam, Silex and Cory vac pots. Hence reason began laying in supply of Silex glass pots that have found for little money lately.
Issue many have with vintage vac pots is filtering.
Many grinders even conical burr ones like KitchenAid or Bodum produce ground coffee with lots of static and fines no matter what setting. Those fines can cause various glass or other rod filters to clog and stall. Some disk and other filters also have similar issue.
Happily nabbed a job lot of vintage Silex cloth vac pot filters so am set for life. Use about once or few times then bung into a jar until washing time. Clean, boil, rinse thoroughly and dry, then put away for reuse.
Odd thing is can use store bought ground coffee (even from K-cups) in my vac pot using glass rod filter no problems.
Looked at getting a more professional upmarket grinder from various auctions and was promptly warned off. Several washing machines is bad enough, line was drawn at starting a collection of coffee grinders. Hahaha