I love my React....Its so light and very fast, I had to tone it down big time because it was to fast reacting to my inputs lol.
Coming from my M8, it feels about the same, just lighter and much faster.
I like how I can update it via my computer and store all my settings on the puter too.
It does have the vibrate feature for warning you about things like battery voltage, temp, lap times, pit times, and so on.
It also has built in voltage meters for the rx and tx right on the display

Im going to be selling my M8 with spektrum system real soon