Comparing stainless 1911A1 style versions, the Remington R1S is slightly cheaper than the Springfield Mil-Spec but both are very reasonable in the $650-675 range.
Either is a good choice but I went with the R1S because I really like its pre-1911A1 flat mainspring housing matched with the 1911A1 short trigger and the dovetailed front sight instead of arched MSH and pinned front sight in the Springfield. The R1S also is nicely dehorned and has a tight slide to frame fit and very tight barrel to slide fit. The R1S has a cast frame, the Springfield forged. Otherwise they have similar features and lots of modern touches like beveled magazine wells, polished feed ramps, stainless steel barrel, lowered scalloped ejection port, passive LCI, two magazines.
The R1S unfortunately has the Series '80 firing pin block while the Springfield has a built in lock in the MSH. At least both can be removed.