Those are good optics, but in slightly different leagues. First, the good news is that NF and Steiner do not make a bad scope. The SHV is a slimmed-down NXS, but still has many of the great optics. The Steiner T5Xi is a hardened tactical scope, with the same glass as the M-Series. The Steiner M-Series is a World Class scope used by German and American military, and on a par with Schmidt & Bender and other high-end scopes. The T-Series, is, in my opinion, on the same level as the NXS, and is used by police tactical units.
I happen to have several NF scopes, including the same one you are looking at, and also the same Steiner you are looking at. All things being equal, I would go with the Steiner. Yes, they did have problems with their turrets, but that has long been cured. My personal sense in using both is that they are fine scopes. The Steiner is more hardy, but if you are only shooting paper, either will work fine. You also need to look at each reticle and see if you feel equally comfortable, or you like one over the other, as both will do fine at 300 to 1,000 yrd targets.
From a price standpoint, it looks like the NF has an edge. Do keep in-mind that Steiner currently has a 10% rebate.
Also [ warning: press the commercial blocking MUTE button ], I am a dealer for both NF and Steiner. If I can help, send me a PM.