Has anyone tried the feed service from Polygon.io? After reading lots of threads on here comparing different providers I've narrowed the choices down to IQFeed and Polygon but I haven't been able to find anybody talking about Polygon. From their marketing materials and documentation the technology looks great i.e. using a NATS client instead of fiddling with desktop gateway applications or having to install Wine inside of docker. Primary use case for the data is programmatic analysis/trading. One feature that's missing is the ability to subscribe to specific symbols. You have to take in all of them through the client and then filter the ones you want programmatically if you're only interested in a few symbols this seems like a waste of processing and bandwidth. Their documentation is also lacking when it comes to the data formats of the specific streams they offer.