Signum Pro Poly Plasma 1.18 and 1.23 Signum Pro has garnered quite a following in Europe but is only recently making a splash here in the States. Poly Plasma is a bright orange co-poly that has better than average tension maintenance for a poly based string and plays a bit softer than Luxilon.

$24

Signum Pro Hyperion 1.24. Another of the new Black Line strings from Signum, this is a polyester string that's designed to be more arm friendly.

$27

Signum Pro Tornado 1.23. This heptagonally shaped polyester is one of Signum's new Black Line of strings. Designed to produce big spin.

$30