Meta Ads have been outperforming LinkedIn for us lately in B2B leads. LinkedIn still works for high-ticket or enterprise clients, but a lot of its user base are just job seekers now.
Biggest lesson: know your ICP cold. Random targeting is a waste of budget. If you understand who you're talking to, what their pain points are, and how your funnel flows, Meta can generate quality B2B leads at a fraction of the cost.
Lead gen services can be useful, but founders need to validate their offer and ICP before dropping serious cash on outreach or LinkedIn campaigns. That step alone saves more than any tool.