Hi Adam is pretty much correct. I've owned or have owned guns by the makers you listed. All are good makers. The guns they produce today are IMO very well made. I would have to give Grulla the edge in the fit and fitting department. They are not producing the numbers of guns that AyA or Arrieta are. They are now more of a custom gunshop. Yes they do produce guns for the open market, just not as many as the other makers you listed. They also have cut back on the number of models they produce, thus a little more care into what they make.
Arrieta is a fine maker with a wonderful reputation. The guns they produce are also considered some of the best made in Spain. They do produce for other markets on a much broader scale, that does say something about the quality guns they produce.
AyA, what can one say. The main stay of Spanish guns in the world. Their guns are all over the place. But they do have their ups and downs with quality over the years.
As the saying goes buy the gun. But to be honest, the name also means something. If folks are honest with themselves, they'll take an AyA over a Zabala any day, just the reputation that the maker has does come into play.
I wouldn't worry to much about the quality issue with modern Spanish guns, your going to get a bad one here and there with some problem or the other, but overall in the general big picture, you should be just fine.
Best of luck to you!
Greg
