You can use bare wire if your posts take them easily. On the amp end my 2170 has large holes in the posts that accept the 10 gauge wire nicely. On the speaker end the Cardas binding posts don’t have a hole and it is not easy or secure to wrap the thick wire around the posts so I use these...
http://www.soniccraft.com/product_info.php/neotech-sk-8y-spade-p-2020
These are priced right and don’t require soldering. Set screws are used to secure the wire to the barrel and that is a good thing sonically. Solder does not sound as good! Sonic Craft also sells the Neotech banana versions which are also very good. They are synergistic with the wire and have a nice rich, warm, and natural tone.
I usually prefer no connectors, but these seem to work well with the WE 10 gauge.
http://www.soniccraft.com/product_info.php/neotech-sk-8y-spade-p-2020
These are priced right and don’t require soldering. Set screws are used to secure the wire to the barrel and that is a good thing sonically. Solder does not sound as good! Sonic Craft also sells the Neotech banana versions which are also very good. They are synergistic with the wire and have a nice rich, warm, and natural tone.
I usually prefer no connectors, but these seem to work well with the WE 10 gauge.