The Prodiscus Sparta is a straight flying putter. Perfect for straight shots and for putting with a straight flight and soft fade. It holds easily all the lines you throw it and works best for anhyzer shots.
Platinium plastic has the same durability and grip as Ultrium plastic but is softer.
Ultrium is the most durable plastic in Prodiscus' lineup. Lifespan of an Ultrium based disc is extremely long. However it's not all that Ultrium has to offer; it has unbelievable grip and feeling in the hand.