I wish I had stumbled upon this forum earlier but I had my choice of any glock or a slightly used XDS and i chose the XDS. I got a slightly used one with case and all except a cleaning rod and manual for a little more than 4 bills.
Elated I got a sweet deal, I took it straight to the range having never shot one before. Right off I could tell this one is a different beast. I ran into a lot of instances that were discussed on a sticky post here with the gun not going all the way to battery after racking the slide and possibly a limp wrist feed failure. I had already did a functions check before arriving at the range so I knew what I bought was completely functional with no signs of even 50 rounds of wear. I naturally had to adjust and be more intent with my movements and pay attention a lot more than with other guns but after that, it was shooting very well indeed handling double taps and rapid fire with consistent 1-2" groups with some stacked holes and let's face it 1-2 fly aways.
That's not to say i'm thrilled with that grouping. Now what I wished somebody had warned me about--and I'm a first time pistol owner--is the rounds I was feeding it were 230 gr FMJ. I was told by the range guy on duty who uses this gun as an EDC in fact that the rounds need to be lower charged since it's such a compact gun. 180-190 gr should tighten up those shot groups and make it run smoother and get em in HP to make em more effective defensive ammo--which I already knew.
So I had an experience that my have frightened away a novice gun owner but having shot many guns before, I'm not shying away from this one. I see the potential for this gun to be a very consistent even at longer ranges and also reliable for EDC. I hope to report later after breaking this gun in that my groups are tighter and no instances where I have to drop the mag to clear any rounds due to operator error and using ammo that isn't ideal.
As an aside, an XDM owner was there and immediately was gawking at my XDS saying he wished he hadn't let go of his. Of course I offered him a 7 rnd mag! I won't be making the same mistake.