For ease if unfamiliar, just get one of the Remis (private car) services in the terminal - you get them after the sliding doors past customs x-ray inspection, but before the next set of doors. They all take CCs and other than Manuel Tienda Leon, about the same price. All reliable. Car quality varies, but nothing horrible. You'll be escorted out to the car.

That will be your easiest and most reliable option for the unfamiliar. Getting an Uber / Cabify, etc. can be a challenge if you're unfamiliar, and you don't want a taxi from EZE unless you've already arranged something and it happens to be in a taxi.