My favorites are my HK P30L, HK45, SIG P226 and SIG P228,. I have a CZ SP01 Shadow and it is a great shooter, though big and heavy, but has a safety and no decocker so I don't consider it DA/SA. You can get CZs with a decocker though but not both like with HK or Beretta.
Though I don't own a CZ...