The Bach Strad is perhaps the most popular, and well-used trumpet available to professional trumpet players today. The reverse leadpipe model has been designed to provide efficient airflow throughout the trumpet, removing any barriers to the air column with the edges of the tuning slide's piping. Previous to owning and performing with this model, I was slightly apprehensive of the improvement by this small change. I am delighted to report however that I am now beginning to notice the change in airflow through the horn. After playing on a colleagues normal Strad (with non reverse leadpipe) I was actually amazed by the difference in sound produced by the reverse model. Although not enough to warrant ditching an normal Strad and buying a reverse leadpipe model straight away, I would recommend trying both models out before purchasing, I really relish the thought that all the effort I am putting in producing a strong airflow thorough the instrument is not losing any efficiency due to edges inside the leadpipe! Interesting thought when buying a new trumpet...