I have skated a variety of trucks for transition and pool skating over the years, Indys, Gull Wing, Grind King, etc. The Theeve TiAX titanium axle trucks are the most stable and best turning trucks I have ever owned.
The trucks can whip carves and turns quickly but are very stable riding pools or grinding coping. Good for 50-50s too. I thought Indys were stable but the Theeves are better.