I also have used these to splice things together -- also pretty easy to pull back apart. I did not consider or measure the voltage drop.
https://www.homedepot.com/p/Id...k-30-1342S/202894306
For small wires, something like this --
https://www.homedepot.com/p/Id...ack-85-925/100192058
I've not used these but seen it pics. In fact, I notice they are stock at my local HD, and since I'm going there today anyway, I'm going to grab a pack. save on some soldering!