I don't understand your logic. You've made a comment upon the Lothar Walther and how it apparently loses accuracy after 150 shots - ok. However, you have implied you wont be buying a smooth twist barrel, because the Lothar Walther ( with standard rifling) is apparently crap.
There's a Lothar Walther on the Edgun, and a smooth twist on the FX.
I may have got it wrong...