What are some advanced lead research tools that use AI?

I’ve always found traditional lead research tools limiting. They stick to rigid filters like headcount, industry, or location, which don’t always work when you have niche criteria. I found Telescope last year and it was amazing! Their today's launch inspired me to launch this post. :) Telescope with Smart Criteria is your very own lead research agent to search for leads using fully custom criteria and filter by anything you want, no matter how niche. Telescope makes Apollo, Sales Navigator, etc. look primitive. Check out the Telescope launch here! I’d love to hear—what tools or methods do you use for lead research? Are there other creative ways to get more targeted results? Let me know in the comments. :) P.S. I hunted Perplexity Assistant on PH today!