I am a Henderson resident have been to Shake Shack twice.
I went the first time in early February which was not too long after it opened. I'm not a huge burger fan by any means, but these are DELICIOUS, especially for the expected quality. (I expected cheaper quality due to the price, speed of service, etc.) I was amazed at how much flavor the burgers had, in addition to the juiciness and seasoning of the patties. The buns are soft and compliment the patties well.
As for the French fries, wow. Outstanding. I honestly don't enjoy crinkle-cut fries usually, but I was blown away by the ones here! I order the cheesy ones, and they have a perfect amount of cheese. Enough to cover your fries, but not in an excessive manner. NOTE: if you don't like cheap cheese, don't order the cheese fries.
I did not order the shakes because the prices for the size were high. Regardless, everything else was great!
The service was shockingly quick both times I went. The first time, I waited in a line of at least 30 people for maybe 10 minutes. I received my food about 15 minutes after ordering.
I recommend this place to tourists, residents, couples on dates, etc. the food is extremely affordable for the most part, and the quality is outstanding.