If your choice is between a Rock Island Armory, and a Taurus, by all means go with the Rock Island Armory weapon. Taurus quality is spotty at best, poor in fact. Yes, they have a lifetime warranty, and chances are you'll need it. Stories abound about these weapons, along with the frequent flyer miles they pile up traveling back and forth to the factory.
Rock Island, (i.e. Armscor), guns are far better in overall performance and quality. Talk to any gun shop that carries both and ask them which model has more satisfied customers, and is less of a headache for them. 3 local dealers near me have stopped carrying Taurus because of all the problems they've had to deal with.
An even better choice in a 1911 for just a little more money would be either a Remington R-1, or else one of the Springfield Mil-Spec models. The latter come in both blue, (Parkerized), finish, as well as Stainless Steel. Springfield Armory builds some of the best 1911 pistols currently obtainable.