yes, I think both are same value interms of search engines crawlers but not for the users its difficult to remember the hyphen domains compare to non hyphen domains, So I prefer without hyphen domain names

[DELETED]

Yup, exactly.

Try Google "digi photography tips", with quotes.
And notice the domain name, it still rank with hyphen is there.

Hyphens are fine - they actually help differentiate between words. Some combinations can cause confusion.

I recall:
penisland.com

Pen Island
or
Penis Land

;-)
;-)