I use the Nova g3 with the JSPIN pin jaws. I paid $42 a couple of years ago, there is a newer model of the Jaws out (not sure the difference), pricing is all over the place so shop around. I find the pin jaws to be pretty effective, but I do turn round prior to drilling (I think the pen jaws tend to be better for square or rectangle blanks). Turning round prior to drilling allows me to TBC without bushings from start to finish. The pin jaws are also useful for turning other things - the pen jaws seem to be more of a one-trick-pony. I have also used a collet chuck for drilling, you can get a super accurate center line hole but you have to turn round and to a more specific diameter.