What is the best Deere 850 dozer winch

[@timgiles9413]

I'm needing to buy an older model JD 450 but most of them do not have winches.
Would you explain a little about those smaller JD dozer winches please.
If I found the right dozer without a winch, how much would a good working winch costs?
Also, any recommendations.
The dozer and winch would be used to pull logs in the steep hills of West Virginia.
Thank you.