Well, considering that ping times can be still abysmal due to your ISP's incompetence...

Some tests that focus on interconnection issues (ISP to another ISP):

Continuous

To Azure: https://azurespeedtest.azurewebsites.net/

To AWS: https://awsspeedtest.xvf.dk/

One-time

To Cloudflare: https://speed.cloudflare.com/

To Netflix (maybe misleading due to direct interconnectivity in some ISPs): https://fast.com/