Ah. I remember that one. For reference (yours, mine and other readers'), it can be found here:
https://www.thehighroad.org/index.php?threads/inexpensive-9mm.864215/
The list does look like a good variety of things to rent, to figure out what you like. I have to give you that. When I read the list (and I apparently didn't read carefully, because you were certainly clear enough), I read it as a list of possible contenders for purchase. I would make some pretty significant changes to that list, were it for purchasing, and less for experimentation.
For the jack-of-all-trades gun (CC, range gun, truck gun, etc.), I think you'll find it hard to beat a compact-class polymer. This will include the G19, M&P, the SD9VE, Ruger Security 9, SR9c, etc. Those pistols are large enough to shoot well, but small enough to conceal. The caliber/capacity/weight/target-radius calculus is about as it gets. The downside is that they're jacks of all trades, master of none. There's always a pistol that has a longer sight radius, or more capacity, or is a better target gun, or .... or .... or.... But if you want one gun that does it all reasonably well, this is the sweet spot, IMHO.
If you're planning on carrying regularly, I would absolutely add a Shield to that list. It's not a secret that I'm a big fan of my Shield, and (again IMHO) it's one of the best values in carry pistols on the market today. Mine eats everything I feed it, shoots like a bigger gun, and is capable of better accuracy than I've been able to wring out so far.
So, free advice being worth what you pay for it, and all that .... YMMV.