I got into this back in 2016 - was scraping price data, kept getting banned, fell down the proxy rabbit hole trying to figure out why. Never climbed back out.
Now I run TopProxyLab. What I actually do: stress-test residential, mobile, ISP and datacenter proxies until something cracks. Fraud scores, leak checks, throughput, the boring stuff nobody screenshots. Dolphin{anty}, ZennoPoster, Scamalytics, Spamhaus, and a pile of my own curl scripts held together with tape.
50-something services tested at this point. Some were great. Most were... fine. A few were straight-up garbage in a slick landing page, and I say so.
Raw logs and screenshots? Ask. I keep them. editor@toproxylab.com