How big a TV should you buy? 37? 42? 50? 65? 90? There's a TV in nearly every size you can want, and at nearly every budget.
As long as you're not limited by a cabinet or entertainment center, you can probably get a bigger TV than you're figuring. Possibly, a lot bigger.
Here's how to figure out how big you can go.
The short answer: as big as you can afford. The longer answer depends on your room, your seating distance, your eyes, and the...