I have the 3-15 in both a Tract Toric and the new Razor LHT, and I think the Tract is every bit as clear, handles mirage a little better and got an extra five minutes out of the Tract at sundown
I have the 10x42 in both the Tract and Razor HD. I personally like the feel of the Tract in hand.
Clarity is basically the same, colors are maybe a little better on the Tract, and side by side, I could see in the shadows under trees a bit better with the Tracts.