Precision Matthews has a good quality 8” 4 jaw D1-4 chuck if that will fit your spindle. It is made in Taiwan and I have been very happy with it so far.I don't think any of the chucks are of any special value. Speaking of value, where to get a good-value 4-jaw independent?
4 Jaw Chucks – Precision Matthews Machinery Co.
www.precisionmatthews.com