My verdict: the global leader for B2B phone numbers, perfect for international.
The global leader for B2B phone numbers (equivalent to Kaspr, especially in the US). Lusha has a massive database (100M+ contacts).
It's great to have both (Kaspr + Lusha) if you have the budget, but overall Kaspr is often preferred in Europe. It's a bit expensive.
What I like less: the high price, and for the French market, Kaspr does better. If you have the means, FullEnrich can be even more complete.
My advice: use Lusha as a complement to Kaspr for international coverage. Perfect for the US/global market.