I use
this for 4.5-6.5mm drill bits.
Whilst I dare say a cordless would be fine, I only need to drill wide shallow holes for 6mm x 2mm magnets in bases; a cordless drill is just too much for this sort of task, and the pin vice offers much more control.
I would say though, bigger hands are a benefit for the one I linked to, as it's pretty chunky!