Much better quality than anything that comes out of a Keurig at comparable up-front costs and much lower recurring costs (just buy whole beans) plus a virtually limitless selection of coffee.
There's a company making reusable metal filters for the Aeropress too if you don't want to buy any supplies for it ever in the future.
There are also many other products which make coffee of higher quality than Keurig; cold-brew drippers, pour-over systems, vaccuum brewing, Moka pots, French presses, portable espresso makers, etc. There are so many awesome ways to make coffee these days that it boggles my mind how popular Keurig systems are. Outside of hotels, I really don't understand the appeal. Even some brands of instant coffee / mocha mix are tastier IMO.
