It suppose it really depends on what you’re looking for. PSE or GFE? DFK? Lots of passion or blow & go?
If you’re relatively new to the scene, starting with a duo might be a gamble because you can’t be sure how the ladies will interact with each other and with you. Best to find a great SP first.
I would suggest that the odds of having a great session are considerably higher with a well reviewed SP.
If it was me, I would choose the well reviewed independent companion, but I prefer sensuality and chemistry over PSE. However as Marshman says it depends what you are looking for.
You mention the independent companion is well reviewed, but don’t specifically mention reviews for the duo. For me No Reviews = No Way.
You could be brave and try both options, but spend time with the independent companion first. You might forget about duo.