The king of memory card readers has always been the Lexar ones.
My new go to reader is a really cheap one from Transcend.
Works flawlessly on my Late 2013 Macbook Retina 15″.
This beast of a thing is small, light weight and fast.Best thing, only like $18. This was with the Komputerbay 1000X 32GB CF.
Transcend USB 3.0 Super Speed Multi-Card Reader for SD/SDHC/SDXC/MS/CF Cards (TS-RDF8K)