Speed Passion GT2 or Orion Vortex R10 pro.

[Suzukitudor]

I am in the fortunate position to have a choice of speedos to put in my Cougar KF and recently purchased Yokomo Bmax4 iii. My primary buggy is the KF. Which speedo is the best one to be using before I start chopping and soldering? Choice of Speed Passion GT2 or Orion Vortex R10 pro. Just returning to buggies after a 20 yr plus hiatus so a bit out of the loop.

Thanks

SZ