here in austria geco is a quite common used ammo.
most popular calibers a used: 9x19, .45acp, .38/.357spl, .22lr
the 9er in 124gr has more recoil/is bumpier than e.g. S&B 124gr ammo (imho the softest 9x19 available, at least in the cheapest ammo range for 95-124gr ammo).
good stuff, but AFAIK(!) i think the new one is made in hungary by what was formerly MFS. didn't get the whole story of this company-structure. i heard some opinions, that quality went down. for me, every ammo which goes bang without issues at reasonable prices is a good one. depends on your demands. so i can't help you with that.
they are known for having quite hard primers, some sport/bullseye shooters had problems with their light striker/firingpin springs.
geco brass is also popular by reloaders.