I purchased one from Yaqi and it shaves a treat. I read somwhere that Yaqi made the DOC head that Italian Barber was selling with its handles but I might be wrong...? Best $5 I ever spent
That's my understanding also about the IB DOC.
The Yaqi is on the mild side but they are very nice shavers with good quality and bargain prices.
I'm actually waiting to see if my bro in law wants to try DE razor shaving and I'll give him a DOC as a starting razor.