I have an NS-2 and a Decimator and I prefer the tone of the Decimator, but prefer the performance of the NS-2 for my high gain uses MUCH MUCH more.
I bought the decimator simply because of the "good" rep it has. Granted, I noticed that it retained a bit more high end than my NS-2 does, but I find the gating isn't as good. finding a balance of threshold and release has been difficult for me and the decay of sustained notes is no where near as natural as the NS-2 is, even on light settings.
I moved the decimator to my "low/mid gain" board and rarely even have it on.
Probably one of the biggest let downs in gear purchases I've made. Thankfully they arent that expensive, lol.