Better depends:
If you like your pads lower under the jogs, then the NV has that.
The TM8 has way better jogs in my opinion, hence if you are doing a lot on your jogs and like to scratch TM8 all the way. The size of the pads is a little bigger on the TM8 and for my workflow the position of the knob to select tracks and the back/load/view switching buttons on the TM8 are much more ergonomically placed.
Many things are also about getting used to what you use… so overall the TM8 is the more solid controller for me. But as I said YMMV (your mileage may vary).