In my opinion the best pen chuck on the market would be the one mentioned in this thread: http://www.penturners.org/forum/topic.asp?TOPIC_ID=10190
I imagine that there will be some more made shortly so be sure to send an e-mail to Fangar.
Thanks for the kind words of praise guys. I have been way to busy this week with work. I have the stock ready for about 30 more Barons and about 48 Gents/States. I am ready to mill, but just need to find the time. I hope to have them all ready to go by the end of next week it at all possible.