Don't listen to anyone at Best Buy because they're trying to get your money, not give you good advice. Insignia is a knock-off brand so you have a higher risk of ending up with a bad unit. I'd stick with Samsung, LG, Vizio, Panasonic, Sony, etc. Brands you know. Then again, a good price might be worth the risk of an off brand.
The Wirecutter has a good couple of recommendations: http://thewirecutter.com/reviews/best-small-tv-samsung-un32eh4000/
Otherwise, as Skip said, the LCD forums can be a great place to find what might work best for your needs.