2 years already? Time flies fast.
See this breakdown by g90ak:
https://discuss.eroscripts.com/t/osr2-or-sr6/134961/4?u=falafel
If you haven’t decided yet, the OSR2+ is always a good starting point. It’s cheaper to build and serves the purpose just right. Go for an SR6 if you are an avid VaM user, or holds a collection of heavy sleeves (700g+) that you want to put to action.
If noise is a concern, forget about the SR6. Invest on quality servos for the OSR2, or look into the SSR1.