Just a short Lexar Professional USB 3.0 Dual-Slot Reader review to mostly say "This is what I'm using".
For convenience reasons, the built-in DSHC/SDXC card reader in my laptop is usually my first choice for uploading my photos, but CompactFlash cards are not compatible with this convenience. For those, I turn to the Lexar Professional USB 3.0 Dual-Slot Reader.
Take the reader out of the package, plug in the included USB 3.0 cable, pinch the sides of the reader to open it up, insert your SDHC, SDXC or CompactFlash card and begin your upload.
Close the reader when finished to keep the slots clean (This feature is especially useful when traveling).
The Lexar Professional USB 3.0 Dual-Slot Reader is a simple, reliable and fast choice. Lexar sent me one of these readers for evaluation - and I bought a second one myself.