Like some of the others here, I have heard negative things about the Shamrock. Basically that L & H had set out to make an actual folk harp (which the Troubadour isn’t) and not quite succeeded. But I’ve never actually heard one. Most of the Dustys and Tripletts you would be considering AREN’T in the same price range, alas! unless you go for something like the Ravenna 34.
What kind of music do you think you’ll be playing down the road? Folk? That will play a role in your choice.