I maintain the difference may be small, but I attest that that small time save is significant, and would need to be noted.
This is true, however if a person is on a really tight budget, it is not logical nor sane to influence him to spend so much money for a PCIe SSD.
If you are a wealthy person then go for the more expensive option. If you earn a median salary then go with the cheaper option without feeling regrets or that you made the wrong choice.
It's really simple.