I've got and enjoy both, but get the Springfield. Here's why.
Springfield has the highest quality frame and slide one the market today, they are drilled and milled square and the barrels are accurate. Everything else is gravy, especially if you ever want to swap/upgrade parts. You'll really appreciate the frame being square, then. My G.I. is being re-built into a carry gun and will retire my current when it comes home. Utterly reliable, after swapping out the questionable factory recoil spring. A whopping $7.
My Armscorp pistol is my daily carry gun right now. It's beat up, finish worn and has some pretty bad scratches, but it runs. It runs to the tune of about 10,000 rounds so far and I had my first failure this past spring. Well, first non-magazine related failure. I had fits for the first couple weeks of ownership finding mags that tripped the slide stop reliably. Oddly, CMC shooting stars work well, as well as Colt and Mec-Gar.