For me, it is a question of state laws and my fingers.
I prefer the Tactical/decocker version of CZs. Don't get me wrong: I like manual safeties. I love the 1911 and BHP. I also am odd in that I prefer the Taurus PT92 thumb safety [non-decocker model, pre-1991] to the Beretta 92 slide mounted safety models. I won't list all the thumb safety handguns I have- but, I like them and am both confident and comfortable with their use.
However, CZs fit me like no other pistol. My fingers and thumb are such that I cannot sweep the safety off on any of the manual safety models without shifting my grip. I also can't put it 'on' without shifting my grip.
The CZ Decocker models fit my fingers just right [esp after a reach reduction trigger/action kit is installed, but that is another story].
So- If I COULD, I'd leap at an SP01 Tactical, to have the decocker.
However, in California, I cannot get a Tactical shipped here [California's 'safe' handgun list- it isn't on it].
So, I bought a manual safety SP01, after I found out about CZCustom's extended/wide safety. I put that on, and now I can operate it without shifting my grip.
I am getting used to it. I do like how easy it is to put the safety 'on' with this aftermarket part. Yet, it feels odd to me.
I know I'd sell it in a flash once I got an SP01 Tactical.
So- due to my thumb/finger length, and my state laws, it was Manual Safety for me. Even though the Tactical is the best fit for my hands.
Good luck!