Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great coffee unreliable machin

I bought two identical machines. I have two homes and split my time between them. The first machine survived the one year warranty (six months of my use) and then failed out of warranty. Cost of repair not worth it. The second machine ran for five months and failed - electronic chip replaced under warranty and running well but if it fails I will junk it too.