Spade on spade or banana and spade?

I have a question which I've thought about but can't come to a conclusion. My speakers can be biwired but I've decided to use a single wire with a 20" jumper. The speaker cable and the jumper will have to go into the same connector. I can use spades or bananas and I want to use the best combination for a secure connection. Would it be best to use all spade connectors or to go with a banana connector on one end of the jumper? Or another way to say it would be: is it better to put two spades in a connector or to use a spade and a banana?