I had the one Costco sells or sold, anyway they have a QC / reliability issue in my opinion, went through two of them and Costco covered that (under one year each), the third one died outside the one year warranty, I trashed it and am now using a small Mr. Coffee, not as convenient, but reliable! Costco actually told me that they see tons of returns for defective machines and were considering dropping them as not a quality product, I don't know if that happened?
The brew basket thing that Keurig sells or I think in most cases comes with the machines didn't work well for me, they are a couple third party baskets that I was just about to test drive when my machine died. At least one of the aftermarket options has a small paper filter, that looked viable but I never tried it. I loved the Newman's Special Blend K-Cups, BUT even at Costco bulk sizes it still cost a quite a bit per cup, way cheaper than buying a cup of coffee at the TS however.
My brother has a roaster / coffee shop operation in Seattle, so I have been enjoying small batch hand roasted coffee for $12.50 a pound, that will make a lot of K-Cup portions! I enjoy his coffee so much that I have started selling it, his Espresso blend is very unique and way better than any of the national brands by a mile. My new motto is "There is no excuse for drinking ANY bad coffee!"
I don't think a full blown manual espresso machine is an option in a truck or for most home users either, BUT I have my eye on the
Jura automated machines, pretty compact and a decent compromise for the average user, BUT not inexpensive either.
TS