Saily is one of the better-known providers because, like Holafly and Airalo, it does a lot of advertising.
When it comes to transparency, Saily sets the standard—with its unlimited plans, you know right away how many gigabytes of high-speed data are included and what speed you’ll get afterward. For some destinations, Saily offers a particularly large amount of high-speed data with its unlimited plans compared to the competition—for example, 5 GB per day for Turkey.
In terms of price, Saily falls in the middle of the range, but is considered very reliable.