I personally havent used a Keyence speedo .. but from my experiences with the GT-7 ... DONT GET IT .... I am on my third one and it is up for sale at my local track. The first two went back to Novak for severe glitching problems and shutting down in the middle of a run (the speedo went into programming mode in the middle of a race .. the steering was ok and the lights changed as I would pull the throttle but no go. turn off then back on and it worked for about a race and a half and then out again) I use the LRP Quantum Competition with the Worlds Upgrade Kit so I have the heatsink and the large capacitor. No glitches no problems, it feels like my old TC2 from Novak but its a lot lliter. But thats just my -.02