That is part of the problem , no one in my area really carry any of them. As far MIM part go, the RO is only one out of the 4 that have any, and no they really don't concern me since SA MIM seem to do just fine.
Right now the DW PM-9 is at the top of the list, but all are fairly close with the RO in last, mainly just because of the lack of FCS and FSC
It all started out really wanting the SA 9mm Combat Operator, figured it would go nicely with my SA TRP Operator. But then started to look around .
I think it might come down to picking two and flipping a coin.