I have Lansky's booked for our upcoming trip. Even though with the 2 of us it is about $60 more, there were some things that went into making my decision and it pointed to using them: #1 I have always read positive reviews. I've used Karmel in the past and they aren't getting the best reviews of late. For us, their van was dirty, the seat was broken, and we couldn't understand our driver. Our return was better, but, late. #2 They make a grocery stop. #3 If necessary, they provide car seats at no additional charge (not necessary for us but that is a selling point). #4 If you have 4 passengers it is cheaper to go with Lansky's. #5 My biggest selling point and why I personally chose Lansky's is reliability. I chose reliability over a shared shuttle because I didn't want to miss our flight and be stuck in LA. We have the last departing flight of the day to our city. Peace of mind means a lot to me. On our last trip we were waiting and waiting to be picked up by a shared van (well over 30 minutes after our scheduled pick up time) and ended up calling 2 times to dispatch. When the driver picked us up he said, "Oh I was just down the street eating my lunch."