Lots of people will vote for Glock because it is the original. A few weeks ago, I would have voted with them, not seeing any reason to stray from a tried and true classic.
But I shot a buddy's XDm, and it is simply a better pistol. It fits the hand better, the trigger's better, even the slide seems to cycle more smoothly.
The XDm is Croatia's improvement to Gaston Glock's original, and they have done it better.
Don't be surprised, it happens everywhere. For many decades, we in the USA have been innovators, but we stop refinement before perfection is achieved. Electronics is a prime example: Who designed the original transistors and transistor radios? Americans. Who perfected them? Japanese. Who invented mass produced automobiles? Americans. Who perfected them? Japanese or Germans, depending on your viewpoint.
Back to cars again: The British developed the "sidewinder" front wheel drive system in their Mini Cooper. Austin Minis have come and gone. But Honda, Toyota, Nissan, Mazda, Ford, Chevy, Dodge and others are trucking on with the design. Remember when Cadillacs went front wheel drive in the early 70s? It was a real drama. Those old rear wheel drive Cadillacs are worth a mint now.
Who invented striker fired combat pistols? Gaston Glock, an Austrian. Who perfected them? Well, Germans (Walther P99) and Croatians. (XDm)
The point of all that babbling is that just because a certain company or person
designed a technology or started a trend doesn't mean that that person or company makes the BEST example.