I like them all and I've carried both ways. But as a general rule, I prefer handguns for carry that don't require the use of a manual safety. But since the safety model can be carried cocked and locked or you can carry the gun for a DA shot by lowering to the safety notch (same area the decocker models lower the hammer too).
-Safety model guns (Omega models even more so) are easier to work on than decockers. If you plan to do so.
-The safety models can be cocked and locked or carried by manually lowering the hammer.
-Both can have decent triggers after some work and/or rounds sent down range.
My advice:
-If this is purely a range gun. Get the safety model.
-If you are using this for carry eventually. I like the decocker so you don't have to bother with manually lowering a hammer. Though not a huge deal.
-But if you don't mind and are comfortable manually lowering hammers, but don't want to use a safety for carry. The gun can be safely carried DA.
-If you buy the safety model and work on the trigger and remove the firing pin block. And plan to carry DA. The hammer needs to go all the way down. If you leave the firing pin block. It can be lowered to the middle (safety) notch. Like where the hammer falls on a decocker model. For drop safety. The older pre-b 75's that don't have firing pin blocks. The hammers are required (should) be lowered all the way down to avoid accidental/negligent discharges from dropped guns or bumped hammers (however unlikely). If you remove the firing pin block from a decocker. I'd lower the hammer down all the way as well. Which kind of negates the point of the decocker.