Another question as I rebuild my "favorite" old frame.

I have some really nice Suntour Superbe Pro brakes, single pivot of course. Should I replace them with Shimano Tiagra dual-pivot brakes. I have both but the Suntours are so much better looking and lighter too (I think).

Are dual-pivots that much better?
The Superbes seemed to work great for years.

Opinions needed.
Thanks,

Blake