Mezmo covered just about everything here. I'll just add a couple of things.
On the bare wire vs. connectors issue - if your wire is silver or silver plated, bare wire doesn't really have any drawbacks. Silver will tarnish, but silver oxide has the same electrical properties as silver. Copper oxide can severely hamper the conductivity of your cables. A simple answer is for silver wire, just go bare, and for copper, have your dealer re-terminate them.
For bare wire, make sure to take extra care when hooking the speakers up to ensure that the wires on each post do not touch.
As for spade vs banana plugs, generally, a simple spade make a better connection than a generic banana plug, but there are some bananas that are excellent. The same can be said for the security of the connection. Most banana plugs are non-locking and will slip out easily. A good cheap banana connector is the Multi-Contact LS4. They're really cheap (about $2.50 a piece) and are much better for signal transfer than most other generic bananas.
Good luck.
On the bare wire vs. connectors issue - if your wire is silver or silver plated, bare wire doesn't really have any drawbacks. Silver will tarnish, but silver oxide has the same electrical properties as silver. Copper oxide can severely hamper the conductivity of your cables. A simple answer is for silver wire, just go bare, and for copper, have your dealer re-terminate them.
For bare wire, make sure to take extra care when hooking the speakers up to ensure that the wires on each post do not touch.
As for spade vs banana plugs, generally, a simple spade make a better connection than a generic banana plug, but there are some bananas that are excellent. The same can be said for the security of the connection. Most banana plugs are non-locking and will slip out easily. A good cheap banana connector is the Multi-Contact LS4. They're really cheap (about $2.50 a piece) and are much better for signal transfer than most other generic bananas.
Good luck.