I have been using Starline exclusively since I started loading for .45 Colt (It's not LONG!!!) The Starline is cheaper and better than the others. Only size your brass just below where the bullets seats...that will allow your brass to last much longer. Consider casting your own bullets. The heavies are very expensive to ship. Wheel weight lead is a great alloy for even hot .45 Colt loads, and besides, most moulds are being made with a gas check these days, so that's cheap leading insurance.
Go to
www.sixgunner.com, find John Linebaugh's page, and read everything there. Then you'll see how strong that Vaquero is.