I would say SC, but it's just my wild guess. If you have higher hashrate with SC, then stay with SC.
Well I may have answered my own question just now as I crunched some numbers
I lost about 15 MH ETH mining in total across all my rigs which is rougly about $32 USD a month.
However for that loss I can mine around 450 LBRY a month for the hash rate which is around $63 USD today
If mining SIA, I can mine around 143351 SIA a month which around $70 USD today worth
So in esscense, if I mine ETH ($32) + SIA ($70) I will make an extra ~$102 USD a Month.
So this all seems like SIA is the way to go right? That's what I thought...
If I calculate at the 30 day highpoint of LBRY's value, that same 450 LBRY is worth ~$121
...So yeah, depending where the values fall these are almost a toss up right now.
I'm going to mine LBRY for a while and see where it goes.