I'm not aware of any general consensus.
1. Gen dial- hideously expensive probably and hope you don't get scammed.
2. Vietnamese dial- the usual suspects- if you don't know them, keep reading, you'll figure out who they are eventually
3. Economical dials- may or may not fit a 1570 movement, like raffles dials.com, maybe ebay.
1016_idiot_savant's 1016 looks nice. I think it's an excellent starting point. Compared to the pic of a gen, I notice the lugs are too thick and the crown emblem on the dial is larger than the gen dial crown emblem, but no one's ever going to notice in the real world.
And it's an easily affordable watch.
Putting a gen 1570 in a watch is a big mistake, IMO. You'll end up with a rep watch with a gen movement. I can't see where you'll ever find a gen case and gen dials are also pretty scarce.