WIRED compares two recently released plastic-free drip coffee makers, the Ratio Eight Series 2 and Simply Good Coffee Plastic-Free Brewer, amid concern that conventional machines may introduce microplastics into drinks. The review concludes that the Ratio produces the better-tasting coffee and can rival high-end pour-over brewing, while Simply Good is the stronger choice for buyers seeking to eliminate plastic contact entirely at a lower price.

The Ratio Eight Series 2 costs $799 and keeps hot water away from plastic, but may still involve plastic in its cold-water system. Simply Good’s $480 brewer uses a 304 stainless-steel frame, borosilicate-glass reservoir, carafe and boiler tube, plus limited medical-grade silicone seals; it has a 40-ounce/eight-cup capacity and a five-year warranty. The article notes that the health effects of microplastics are not yet settled, but presents the machines as premium alternatives to largely plastic-based drip brewers.