I picked up a lot of the Tri-Star Spanish made doubles but never bought one. Many had Churchill or round knob stocks which are not to my taste, and I am not a fan of all that Fleur De Lais checkering. Having said that I thought they were at a pretty good price before they all went in Mitchell and Owatanna Cabela's.
I actually do have a Brittany from H. Zabala that American Arms imported. It is a true sidelock and much different re fit and finish. I have shot the crap out of it since about 1992 and many are the pheasants that have fallen before it. 20ga. and I sure like carring it around. I did have to replace one pin and an extractor pin. I was really suprised re the spring because Gary's gunsmith only charged $50. Work on sidelocks usually cost a lot more than that.
The bottom line is the Zabala guns are decent for the $ tho certainly not "Spanish best". Other than a Uggie, you will not find a new, quality Spanish double under $3,500. If you want to see if you like a sxs, the Tri-Star should let you test the waters without getting in too deep.