Idk if there's 3/3/3/20/2, but I've got 3/3/2mastery/20/2
as far as i'm concerned, that's the best that exists ingame at the moment. one of the ones i see on another site has energy shield but i don't rly consider that a huge bonus... post yours plz, if you don't mind

as for people implying even a perfect orb wouldn't be any good, i just have to wonder if either you're not capable of pvping with a high damage light sorc or if they haven't tried.. at some point, it's like the tgods gets blasted right off your enemy. 60k+ damage with 85 max resist is 1500hp on a high roll. it's like every shot you land is 5x traps hitting someone at the same time. it won't ever be as good as the pre-1.14 days of d2lod (when you could skill bug a 105 fcr skill with lightning), but it's still quite powerful. and i'm pretty sure lightning is the fastest moving projectile a player can cast in the game.
if you think these orbs are shit even when perfect, i suggest you go to d2ga or some other such realm to try it out