Most comments are concerning EZE the international airport outside of town. The domestic airport near the city center is smaller and simpler but relatively modern with plenty of dining options. Do beware of theft: my digital camera was stolen from next to me when my back was turned. There was no place to report this within the security area (woman at the info desk suggested I look for someone outside of security and when I later at another airport asked an Aerolineas Argentinas rep about asking whether a camera had been turned in she essentially said kiss it goodbye). Back at EZE one point is that the most obvious money exchange places as you exit give the lowest rates. The national bank branch giving the best rates is outside of security and a couple of turns to the right. Not at all obvious. Ditto on taxis: those easiest to find are very pricey. For cheaper ones you need to hunt a bit outside.