> I've only seen that Cogent has a presence here, but the internet doesn't have good things to say about them

They’re good enough and they’re dirt cheap. Pricing really matters since you pass savings on to your customers. Vermont Telecom, as an example of a reasonably sized regional ISP with thousands of customers, uses Cogent as their primary upstream.

I wouldn’t fall into the trap of trying to build something out using hardware or upstream providers that people on Internet forums that don’t have a financial stake in making an ISP work financially and operationally approve of.