Salsa is incredibly easy to make, but good delivery is required.
Tostito's Hint of Lime work very well, but like regular Tostito's, are very large. Try your favorite corn chip. Refried beans work well, salsa significantly improves their rather bland flavor. Anything you eat with a fork works great, too, but store-bought salsa is too runny for burgers, tacos and other handheld food items unless you are prepared for much dripping. For those items, use taco sauce which is much thicker (but I've not figured out how to make yet).
Try some restaurant-style corn chips, the yellow ones. The ones I've tried are smaller, thinner and crispier. Blue corn chips work well, too. Shop your local grocer and try several.