I was initially leery of using Uber or Lyft but after having ridden them now, I can say they are much cheaper than taxis here in Vegas, usually 1/3-1/2 off. And usually the vehicles and drivers are nicer. One advantage is you see the cost upfront. You can also choose between a shared ride, regular car or better car. I will be using them to and from the airport from now on. No worry about which way to direct the cabby to the shortest ride. Also good for shorter hops from one casino to another.
Below are a couple of links for discounts, if you are a new signup. You will need to download the uber or lyft app. Also since the fares are lower than taxis, I am tipping less too.
For a FREE Uber ride (up to $20). To claim your free gift, sign up using this link: https://www.uber.com/invite/lindab10665ue (new signups only)
LYft gave me a coupon code which I can share, $5 off of up to 10 rides. https://www.lyft.com/invite/LINDA71857?p=et01&route_key=invite&v=OUT