For larger purchases or specialized items I use a reputable review site (americas test kitchen, wire cutter, etc.) and sometimes cross-reference a couple sites

For larger purchases or specialized items I use a reputable review site (americas test kitchen, wire cutter, etc.) and sometimes cross-reference a couple sites to see if there are common recs. For smaller ones, I usually just get the one that most closely matches what I need and has overall good reviews figuring I can just return it if it doesn't work out.