While I think re-strike capability is of dubious value (you're better off just racking a fresh round in for the time you've spent), I tend to prefer a double-action hammer with a good, hard strike like that on a Beretta 92 or Sig 226, to make sure things work fine even with hard primers.
Beretta PX4 .40 S&W | Beretta 92FS 9x19 Para | Rock Island Armory GI 1911 .45 ACP | Colt Python 4" .357 Magnum | Colt 1968 Det. Spec. .38 Spc. | Ruger LCP .380 ACP | Daniel Defense M4V1 5.56x45 | Alpine M1 Carbine .30 | Steyr M1895 8x56 | Ruger 10/22 .22LR |1943 Izhevsk Mosin-Nagant M91/30 7.62x54R | Remington 870 12GA