AJM vs PLS, page-4

Interesting question. I have both. Altura a while ago and PLS quite recently.
PLS 1.63 billion MC
AJM 7.09 million MC

I have place a bigger bet on Altura (In no way does that mean one is better than the other), but really detailed research would have to be done.

http://www.copyright link/business/altura-sees-double-on-pilbara-lithium-production-20171112-gzjw59
"Altura and Pilbara Minerals have a formal co-operation agreement, which sees them share some costs, including an access road to the adjoining mines about 120 kilometres from Port Hedland."
https://thewest.com.au/business/mining/pilbara-minerals-plans-to-be-leader-in-lithium-ng-b88642845z

Which has more upside?

Pilbara has the potential of Mt Francisco http://www.pilbaraminerals.com.au/site/our-business/other-projects1/mt-francisco

Maybe Altura will form some sort of alliance with Sayona, a company that has been heavily promoted, sharing some of it's directors with Altura. I also have shares in this one.
Obviously Altura as does Pilbara have room for expansion.

Marcus226
"I want to invest more in these two, but not sure wich one has more potential."

Theoretically one shouldn't loose on Altura or Pilbara and Sayona may have a big upside "if " all goes to plan.