Black Ice will work just fine.

Same as jkiser. Unless you put a boat load of revs on your spare shots, a plastic is a plastic. White dot, maxim, blue dot, ice storm, all are hard and go straight.

If you want a spare ball to go straight as possible any polyester ball with a pancake block will do fine.  If you want a bit more roll look at a urethane ball.  Maybe one of the new Polar Ice balls would work for you.

I am also one who likes to see a little movement in my spare ball.  But since I have a lot of hand, plastic does this for me.  I even take the shine off of my plastic.

If you are the same, the Polar Ice is a great option.  Provides more movement than plastic, but not so much you miss corners.  Also, and this is big, urethane won't chip and will last longer.