Allen Edmonds has some nice cap toe oxfords for wearing with a suite that hold up very well with wear. These two are a little harder to find on sale but they usually do something after Christmas or Nordstrom may include in their semi-annual sales.
Park Avenue
http://www.allenedmonds.com/aeonline...40000000001_-1
Fifth Avene (my preference but slightly less formal)
http://www.allenedmonds.com/aeonline...40000000001_-1