I do believe there are real legit prophets, but I also think most, if not all, are not self-aware of it. Most Christians don't sit there and try to gauge their spiritual gifts.. they just use them as an afterthought, as the service to Christ is of a higher priority than their own self glory often associated with the spiritual gifts heavy emphasis crowd.
Perhaps my answer to the OP would depend on how one defines a "prophet".
Anyone who calls themselves a prophet ... I am extremely skeptical of.
I think there are more likely to be people who prophesy ... Again depending on the definition of the word.
I think some people can develop a level of discernment, spiritual grace, wisdom, sensitivity to the Holy Spirit, and/or ???
These are gifts from God, whether partly innate, partly given by grace, developed from time spent in His Presence, and/or ???
Soooo ...... In that sense, I'm not trying to explain it fully, but I certainly think there are people who speak out of spiritual wisdom. And sometimes their insight has great depth. But when that happens, as ChristsSoldier said, they are very unlikely to see themselves as "prophets" or as people who are "prophesying". They are using their God-given gifts and talents to edify the Body, just as they should be doing.
Those who call attention to themselves, who self-style titles, and so on are not displaying the humility that seems a prerequisite for the revelations they claim to have. I think of it this way - a loving parent won't give a six-year-old a butcher knife to play with. And great revelation given to one who lacks humility is likely to puff them up with even more pride, which God knows is toxic. After all, Paul was given a thorn in the flesh to keep him humble for the sake of the revelation God had given him.
Even supernatural knowledge is not proof of revelation from God. Some knowing comes from less "safe" sources.
I would trust humility over showy revelation. But regardless, I would not "follow" anyone who led anywhere other than what has already been given. Though I would certainly consider wise counsel from one whom I trust.