I don't like to run back and forth through different providers but seeing as Mobius and PO have a very good reputation between them I decided to try Mobius this month. I've already had full use of PO since release mainly on DMZ and highly rate them as well.
The ESP is great, it is a tad crowdy however in comparison to PO. However that is down to you, PO by default their ESP settings work fine and you don't have to tweak anything. Mobius requires a bit of tweaking to your needs.
Item ESP was something I really wanted to test and it really just adds clutter to your screen, but it is very helpful in situations where you just want to loot gold bars and rare items which I have just done in a DMZ game.
Aimbot is actually in my opinion a lot better than PO on the basis that I have enabled it and left it at default and am absolutely beaming players down without any issues. The deadzone feature is a neat addition, alongside a lot more settings than PO offers. The biggest improvement on this aspect of it is using it alongside recoil control which PO does not offer.
Overall, I cannot genuinely say that PO beats Mobius or Mobius beats PO. It really really depends on your specific needs. If you want Item ESP and Recoil control? then clearly its Mobius that will be suited to you.
The biggest benefit for myself is the ability to not have to reinject everytime you close the game, as I am a fat lazy bastard this suits me more so my choice for now, is Mobius.
TLDR: Mobius and PO are practically identical in terms of safety, no doubt about it. Mobius has notable features that PO does not offer, like not needing to reinject after closing the game, Recoil Control for Mouse and the Aimbot having a bit more settings that PO.
The choice is ultimately down to you, but like I have with PO - I highly recommend Mobius.