On Wednesday, March 4, 2015 at 8:38:37 AM UTC+13, wrote:
Any thoughts on the best stand alone Vario on the market? What is most accurate?

The new LX Navigation EOS.

I have replaced my CAI 302 with the EOS and I am very pleased with it. It is stand alone for navigating to waypoints, you can also fly tasks, has final glide together with a Flarm screen and igc ENL logger without having to have an extra hole in the panel tied up. The wind is also very accurate with this vario.