For one of my tentacled alien species designs I was considering tentacle like fingers, even though an intelligent creature with many tentacle appendages could achieve a good level of dexterity and tool usage, fingers seem to be better for fine detailed tasks.
The creature I have in mind is land dwelling tentacled creature with addition finger like tentacles at the end of each main tentacle appendage, all tentacles will be more like a prehensile tail, so they are capable of bending backwards or sideways and grasping with the same strength as grasping forwards.
Even though the creature I mentioned already has tentacle limbs, this tentacle fingers idea could also be used with other limb types if it was actually beneficial. My criteria for beneficial is to be able to create and use advanced human levels of technology.
My question is would having tentacle fingers for the uses I have given be more useful than tentacles alone or normal digits?