Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent. Get this to upgrade your old chain drive dinosaur before it's too late

I have a two car garage under my house that had 18 year old chain drive openers. Greasy, loud, but reliable. I looked into a keypad accessory, but no accessories are available for such an old model. As a result, I decided to upgrade and pulled the trigger on two of these openers. This product is five star fantastic. Quality product that is smoother, quieter, brighter (two 100W bulbs), and just a giant leap forward for everyone in our household to use. I researched and shopped around and no one beats Amazon on this. It's laughable to see people paying $20 - $50 more (higher price, sales taxes, shipping, etc.) from other online retailers or brick and mortar big box home improvement stores like it's still 1993. I installed both myself. Very easy and straightforward DIY task. Great instructions walk you right thru it. Practically took me longer to take down, dismantle, and stuff the old ones in my trash barrels...