I think mechanicals are getting a bad rap for penetration due to one particular head. I think is a design flaw of that head. I don't hear of a lack of penetration on mechnicals in general.
The new hybrids........ more ore less........ hmmmmm. One one hand i say more because you have more stuff to push through and it takes energy to deploy the blades.
On the otherhand the fixed heads have already punched the hole so the mechanical part will just be there to further open the wound. Dont figure they would require any more energy than your typical mechanical.
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