Tested: 3-in-1 Brew vs 4-Level Filtration in Portable Coffee Makers When it comes to portable coffee makers, innovation and tradition often collide-and the results can be surprisingly nuanced. Take the AeroPress Original, a compact marvel that promises a 3-in-1 brew method: French press, espresso, and full-bodied coffee, all in one sleek unit. Its unique design allows for quick, smooth extraction, delivering a bold cup without the grit or bitterness that often lingers in mass-produced blends. Yet, its lack of a built-in filtration system means users must rely on careful technique to avoid over-extraction, a balancing act that rewards patience. Contrast that with the BAYKA French Press, a larger, more robust option that prioritizes precision over speed. Its 4-level filtration system-crafted from borosilicate glass and stainless steel-elevates the brew by removing impurities and ensuring a cleaner, more refined taste. While it may not mimic the versatility of the AeroPress, its focus on filtration offers a purist's approach, ideal for those who value purity in every sip. Both machines cater to the modern coffee enthusiast, but their philosophies diverge: the AeroPress champions adaptability, while the BAYKA leans into refinement. Whether you're hiking through the wilderness or sipping at home, the choice between these two hinges on what you value more-speed and experimentation or clarity and tradition.