My verdict: the entry-level of LinkedIn outreach, with the risks.
Waalaxy is the simplest and most affordable way to start LinkedIn outreach. But the reputation inherited from ProspectIn regarding ban risks is a real problem. It does the job to get started at a low price, but I don't recommend it for long term or critical accounts.
What I like less: reputation of LinkedIn ban risks, not ideal for critical accounts, perceived security as inferior to LGM, limited features to scale.
My advice: perfect to test LinkedIn outreach on a small budget. If it works, migrate to La Growth Machine for more security and features.