Bullcelt,
It would be Pickering for me. Wighill has probably got more and better presented stock if you just want a look around though. Just be wary of his pricing. He'll have your eyes out . You'll recognise the fella easily, the big black horse and little black mask give it away .
You could probably make a good day of it. Go to Pickering via Whitby then travel down the A64 to Wighill then back home straight up the A1.

Chris