I also wear cufflinks. They vary according to the occasion that I'm wearing the shirt for. For formal occasions 14k or Sterling Silver for more casual silk knots. Cuff links that fit all shirts are the hinged T-Back type. Some double ended cufflinks like Silk Knots do not always fit the cufflink eye cut out in the shirt cuff. Some places to look are the high end department stores Barney's, Neiman Marcus etc. Some bargains may be found on Ebay, buyer beware.

As for shirt shopping occasional deals for white shirts and casual shirts may be found at T.J. Maxx or Marshalls if you have any near you. Not a great selection or choice of sizes but costs at or below outlett store prices.

Max