For 3 years, I have consumed the same brand of coffee pads, which I was perfectly happy with. At some point, I got tired of it. So I started experimenting. I wanted to find a low-cost brand that still was decent coffee. I went to all local grocery stores and bought every brand I could get my hands on and returned with 40+ bags of coffee pads.
I unpacked them all, organized them in a weird system of which the pads were randomly chosen and I wouldn't know which one I was using. My girlfriend, who was involuntarily involved, was not so happy because I did the same with different brands of milk the week before and she thought I was going to lose my mind.
Turned out that I didn't need to compromise. The one I liked best was almost the cheapest. It's an espresso from Aldi. It's even fair trade.
Aldi is a famous discounter in Germany, known for very low prices, sometimes less than half of what you pay elsewhere. Somehow, many people still think the products there are bad, except for the brands they know from other stores. However, I found that if you try them in a blind-study, they are often one of the best. And I get to charge my car there for free. So I get the best coffee, for the lowest price, and a charged car. Life is good.