This is a good exchange if you are outside of the area supported by Coinbase, such as South American countries, especially Argentina.
Con They are overzealous of regulations
Each time you make a money transfer, or fill your wallet using any of the methods available, they will ask you for confirmation pictures, receipts, etc. This is common the first time using most exchanges, but Satoshi Tango asks you to prove and verify EVERY TIME. Not fit to buy bitcoin on a rush.