The best lamb recipes come from animals that graze in unsprayed pastures. For this reason, I have rarely found conventional American lamb to compete in taste, tenderness, and flavor with New Zealand lamb, where grazing tends to occur under more favorable conditions. This is especially true for recipes calling for lamb chops!
That said, the number of small scale lamb producers is growing in North America, so you may find more grassfed lamb locally than you might expect.
When this is the case, a slow cooked lamb roast is easy and the simplest recipe of all to make. It turns out perfectly every time!