CalDigit makes some great Thunderbolt 3 accessories. There stuff is pro-level, and rarely on sale. If you do not have a Thunderbolt 3 or USB-C port, then this is not for you.
However, if you want to expand your laptop's capabilities through a single cable, then CalDigit has been the most consistent and reliable brand.
CalDigit only charges sales tax for California Residents. Those buying from out of state will not need to pay sales tax.
They have a very generous two year warranty on their products, and if you have a problem and want to yell at someone they actually answer their phones!!!
CalDigit TS3 Plus $209 [caldigit.com]
Dual DP Mini Dock $99 [caldigit.com]
Tuff Nano NVME SSD IP67 Rated $99 [caldigit.com]
Connect 10GbE $129 [caldigit.com]