I wish I could say that I have compared them directly but I have not. I have compared the Surfers to the Fralin Vintage Hots...but not to the Blues Specials.
I can give this info though:
The Vintage Hots are brighter and less thick sounding than the Blues Specials and the Blues Specials have a little more output and slightly less glassy tone than the Vintage Hots.
And the Surfers seem a little ballsier and throatier than the Vintage Hots....whereas the Vintage Hots seem more refined and chimier than the Surfers.
The Surfers and Vintage Hots are very similar though.
But I believe the Surfers are wound with 42 ga. wire as are the Vintage Hots.
I'm pretty sure the Blues Specials are wound with thinner wire...43 ga.
Lew