Ultra-short-throw projectors turn a living room into a theater without the need for ceiling mounts or long cables. These units sit right against the wall and can last for over 20,000 hours of viewing. Since this is a ten-year purchase, we want to buy a high-quality 4K laser engine rather than a cheap bulb version that will dim over time.
The best time to buy is November when retailers clear out current inventory. Last year's flagship model is usually a better deal than a new entry-level unit. You get better brightness and color contrast for the same price just by waiting for the holiday sales cycle.
The 0% interest window is a deadline. If you still owe money after 18 months, the standard interest rate will apply to the remaining balance, which makes your purchase much more expensive.