Maybe it's just me, but I think that Spartan looks like ass. And the Mil-Spec has typically gone for around $650 or so, so the two are very similarly priced. Might as well go with the Springfield.Only draw if you're going to fire. That said, if you draw and the perp immediately says fuck this and turns to run off, the threat is ended.
Forgot to add, if you're really looking into a 1911 the STI Spartan is hands down the best entry level 1911 currently on the market. It was priced at about $600 which is pretty reasonable for a 1911, but with the gun market explosion after Obama got elected I'm not sure on the price anymore. The SA Mil-Spec is a sexy pistol though.
Also, the SA GI Model goes for $600, and it's almost the exact same gun as the Mil-Spec.