I'll get straight to the point.. I still can't wrap my head around which edition is what. I do have this very comprehensive doc bookmarked, but I still don't know what's "best for me"...
Problem with this doc is, it's too comprehensive. XD
Anyway, I have played SR before, but I don't even know which version. And I do have a ton of 5E stuff from some previuos bundle (which I haven't read). It seems 4E editing was better, and that alone might be worth even if at the lowest tier.