Yukon XL Body Style Molding Question

[ComoYukonXL]

Hello all, and thank you in advance. We just purchased a 2018 XL SLT in Silver and am looking to have the crome body style molding added on to the doors. I believe it dresses them up a bit and looks great. My question is, has anyone had any experience with the aftermarket ones, and if so, how did it go? Or would I better off just buying the GM factory ones. A local shop here will charge $55 bucks to put them on, and I realize it is just an adhesive backing, but I would rather it be done right.

Thank you all,