I dont own any lw barrels but i hear they are great on accuracy but get fowl quick. So you have to clean the barrels like after 100 shots. As for smooth twist barrels I only have experience with the impact and it shoot accurately and I never clean the barrels. I watch some of Ted's and Matt's videos and they claim smooth twist barrels clean itself with each shot cause pellet pushes out any debris. Anyone put a smooth twist x up again an lw and shoot which one is better at say 100 plus yards. Also which one needs more cleaning. Best barrel would be one that shoot great and need less or no cleaning at all