If you only want an 8 oz. cup of coffee, the convenience is there, but I use a 12oz. travel mug and no matter which brand of pre-filled k-cups we try, it’s really bad. So I tried using one of those refillable cups and packed in as much French Roast as I could and it actually tasted pretty good. However, it takes more than a few minutes and all of a sudden the convenience factor is gone. Is it worth it? No.