Reliable but expensive: Uber ($35 last time)
Fast but sketchy, aggressive driving: Kew Cab ($11)
--- last time driver asked to use my phone to order a carry out ravioli plate ---
---prior to that driver stopped in the middle of the freeway to yell at cab next to us ----

To avoid the Uber lot - and the bus ride because of construction- just walk across the street. At terminal C LGA I walk across the bridge to the LGA Marriott.