ST6001 vs. ST4000 auto pilot
Danny, it is unlikely your boat''s value will be affected much by the addition of a below-decks pilot. Typically, options and additional equipment don''t contribute nearly as much to a boat''s sale price as they cost in the first place.
The presence of a below-decks pilot might offer some incentive to a buyer for your boat over others...but the boat''s cleanliness, level of maintenance, and the market for your make/model will be far more important. I agree with you that the 4001+ will probably suit your needs as you describe them. Were I you, that''s probably what I would choose.