4 out of 5 stars. 3.5 out of 5 stars.
So the Skyroam Solis has two different data plans available:
Option A: $9/day “unlimited”. First ~350MB of transfer is fast 4G, but then they drop you to 2G so it feels like dial-up after a while
Option B: $9/GB. Always 4G speeds- no performance penalty, but you pay for what you use.