This is somewhat like asking everybody's opinion on their favorite classic car, or Vegas casino, or Vegas entertainment..quite subjective. My list is somewhat influenced by value ( cost vs return, etc.) in addition to enjoying the grease, toppings, and cheese. What's the average price for a burger in Vegas these days, $18 -20 ? Who knows? Does price / value matter? Value is measured in different ways by different beholders, you say?
Sorry folks, I'm defending In - N - Out for burger value in Las Vegas..double double animal style version. It's still under $10, and tastes great to me after a long , beer-imbibing gambling session. The place doesn't remind me of cookie cutter chain burgers, even though it's a chain. Plus, the pigeons outside really seem to enjoy the very mediocre In - N - Out fries I share with them.
Back home, we visit Blake's, Whataburger, and Five Guys..with an alternating approach sometimes based on how long / short the drive-through line is. I'll second the value of green chile on burgers..adds some tasty zip. And Five Guys fries top our choice list.
One thing I'll comment on regarding Blake's. Their ordering system of late( the call-ahead method) has really gone to the dogs here locally..we've had several screwed up orders with some consistency. I'm not sure what the reasons are, but even the mistaken orders were edible. I know..we should've confirmed the order at pick-up. Who does that? *l*