New S9's are cheap, just order straight from Bitmain. Though personally I have some used s7's that have hashed really well but you never know if people are off loading lemons. Just be careful.
Yeah, I think I'll just pick up a new one instead of 2 used ones. The price is appealing but it seems the unknowns outweigh the benefits. I'm way to new in this space to be able to muddy my way through lemon S9s.
Thanks again