Well, one big issue, to me, whenever I look at a handgun is where is the safety mounted? If it doesn't have one, like on the Sig, find out what internals it does have to make up for that.
If it's trigger mounted, in my opinion, keep walking. Why? "I am the only one in this room, that I know of, who is professional enough to carry the Glock .40" BANG!
On the CZ, it's a solid, frame mounted safety. This is how it should be.
On the early Baby Eagles, or Jericho's, or whatever, they were a slide mounted safety. JD, and company, do not like/recommend slide mounted safeties.
Why? Isn't it all the same?
No, it's not.
Look, your slide performs many functions, and is usually a solid piece of steel/aluminum, but it also houses your striker, which is the part that makes the gun go bang when the trigger is pulled. There also isn't as much real estate on the slide to correctly mount a safety.
By mounting the safety on the frame, where it is supposed to be, you have a solid, non moving part of the weapon with more real estate to form a solid platform. So, when the slide moves around, the components of the safety are nice and sound on the frame and aren't being subjected to the same back and forth force of repetitive round stressors.
In addition, the slide is the part most exposed while in a holster, while the frame is usually in the holster itself. If the safety is mounted on the frame, and the frame is in your holster, there is much less of a chance for that safety to "accidentally" go to fire. Since the back of the slide and hammer region is usually where the snap or buckle is placed for retention purposes, guess what part of the weapon gets fiddled with the most when you holster and unholster the weapon?
That's why we ONLY recommend frame mounted safeties for handgun purchases in the shop.
Just food for thought...
JD