In the same general price range, you could easily find a 20 gauge Model 21 that would hold its value a bit better than a new Spanish gun.
^^^^^^^^^^^^^No truer words ever spoken. It will be more reliable, you can beat the hell out of it and it will still keep firing. And when you are done with it, you have a large pool of people that want to buy a 21. Spanish guns are good value, but remember they are all tailored to the H & H style. Any differences in specs make the gun stupid expensive, money that you will never get back out of it