I've always found SATA cables to be flimsy and cheap myself. But no matter which brand of cables I use, they all seem to hold just as tight.

Tony 1998 SVT Contour (B/MB) #542 3L 1998 SVT Contour (SF/MB) #1266 parts car 2000 SVT Contour (SF/MB) #1533 3L swap to begin!