I am a lime fanatic so when I find a restaurant that serves limeade (plain and pure is my favorite), I have to try it. Sonic's is the best limeade I've had. Hands down. The burgers are tasty and the tots are always crispy, hot, and delicious. The service is fast and courteous (though once they gave us back too much change and we gave it back). I visit Vegas every 3 months or so and I always make a point of visiting this Sonic. A good, solid fast food meal.
Pros: Limeade! Tots! Good, solid food. Good prices.