End of XBMC/KODI support - Which version?

Hello all.

Development of Kodi will not progress past version 14.1 for the Apple TV platform.
→ source: http://kodi.tv/farewell-to-future-appletv2-development/

After reading the article, I am curious to find out which version of XBMC/Kodi you find least prone to crashing and which runs the fastest. I am looking to choose from v11, v12, v13 or v14.

I hope we can find the optimum setup for performance on the outdated hardware of the Apple TV.

Thank you all for reading,