Question special

Most federal loans have higher interest rates than can be found on the private market. For example, going from a 6% interest rate to 5% can lead to an almost $200/month reduction in accrued interest on a $250k loan. With low mortgage rates right now, some may even have resources to refinance using a home equity loan. There is ample discussion below regarding PSLF, and presumably, going private would disqualify someone from using PSLF. Are there other advantages or disadvantages to refinancing with a private company like SoFi?