Unsolved Keyword research with Ubersuggest and its alternatives

[Ivan Palii]

Hi there. I make a small comparison about using Ubersuggest and Kparser in keyword research - kparser.com/ubersuggest-alternative
As I saw, different SEO specialists use different tools for keyword research. I understand, that keyword tools are very similar. But it's really interesting which parameters and functions are the keys to SEOs' hearts.
Can you share how you make your on-page keyword optimization, which tools prefer and why? Thanks