They have a big studio in Budapest now but most of the guys are from Slovakia and southern Czech Republic, although many frequent Prague a lot. Few are Hungarians. I guess Vienna is too expensive for Bel Ami to film as that would make more sense than Budapest for closeness to Bratislava. Also a lot of films are made on location, ie CapeTown.
It's also weird that crummy studios like William Higgins and Big Daddy get so many hot northern Czechs (Bohemia) and Bel Ami doesn't mine Prague.
I've been with a dozen or so of them and know another dozen and in spite of them being extremely good in bed, they all have girlfriends and are extremely straight----just over-sexed. The ones who do several films are the ones who are extremely good in bed with guys. No matter how good looking, the ones who are limited sexually don't repeat.