They offer different pros and cons, so the answer really depends personal preference. Paper filters have a tighter mesh than re-usable cloth or stainless options. They generally do a better job trapping "fines" produced by your grinder that would otherwise wind up as sediment in your cup. On the other hand, the re-usable options are a one-time purchase, washable, and create less waste. Some re-useable filters build up residues, and require a lot of care to keep clean. They can become rancid if you aren't diligent. While some people like the taste of coffee from a metal filter, a paper filter reduces 2 chemical compounds in the final brew: cafestol and kahweol. While coffee has no cholesterol, these compounds are shown to raise cholesterol levels by the way they act on the body. This is true with all brew methods that use metal type filters or screens: espresso, French press, or metal type drip filters.