Just bought the Samsung T5 500GB SSD and ran some speed tests against the PS4 slim HDD. Not scientific by any means but got some some interesting results. See comment below. Btw
647 PS - VW T5 TH2RS CUP from tuner TH Automobile
Amazon.com: New Replacement Belt for Scott PS-17A PS-18 PS-22 PS-48A Turntable Belt T5 : Electronics