GoHighLevel is the pick if you are an agency running many client accounts and want one platform for pipelines, funnels and white-label.
GoHighLevel is built for agencies, and it is genuinely strong at that job: unlimited sub-accounts, a CRM, funnels, email and SMS, and a SaaS mode that lets you resell the whole thing to clients. If you have a repeatable niche offer and someone technical to maintain it, the economics are hard to beat.
For a solo direct-response seller it is a different story. Users call it a cheap HubSpot clone that spreads itself thin, report bugs and slow loads, and warn that the true cost arrives through usage-based add-ons. Its checkout is a feature, not the point, so it is not where a high-volume DR offer belongs.