My adaptation on Genuine bags!
I'm using Hoover for this example!
I'm a huge supporter and love only to use Genuine manufacturer bags or parts. Hoover is my favorite canister vacuum cleaner of all time!! I have 8 Hoover power nozzle canister vacuums in my house currently from early Hoover Celebrity II Elite to Hoover Windtunnel Bagless. However Hoover isn't the same company that they were years back. I don't think TTI has any care for their great heritage and as it sounds like Maytag steadily led them towards a downhill path and didn't take good care of the factories that were in North Canton, Ohio, which are now therefore closed down.
Hoover no longer manufacturers the green standard filtration bags that I actually liked years ago and still can find on rare occasion!! However, the new white replacements are very cheaply made and don't filter near as well nor have as good a performance on the machine. Despite my love of Hoover power nozzle canister vacuums, they sadly don't even have one on the website that I have any interest in getting if I was in the market for a new!! 10 years ago that decision would have still been easy when they had PowerMax and Windtunnels with the Spectrum suction body styling!!
It is with that said, that I have no problem recommending generic bags of Envirocare or if I come across something good from DVC, etc.