The lead I use most is a mains flex and has tinned ends for use in the X hole and Banana plugs on the other end.
Anything that takes a Banana plug by all means try but the better ones do cost some.
Again, while the grabber types aren't suitable for much in the way of current they are occasionally handy.
What will suit you best will depend on your needs whether it be supply a project, PCB repair and test or breadboard work.
You will develop connection methods that best suit you, be it clips, grabbers, plugs and socket, pins and headers etc.
You can conceivably end up with a whole draw full of possibilities so some thought of other usages can make what you get save a few $.
Many go the BNC/coax way with an adapter that plugs into your binding posts and then have various cables options for their test equipment too.
Another thing that you need consider is leads with uninsulated PSU ends lying around on the bench....a recipe for stuff ups.
Shrouded Bananas do help prevent mistakes, retractable grabbers do too.
You could just get all you think you need as cheapies to start with and it won't be long until you know
exactly what you need.