Re: yamaha soprano
Based on the tone of your question, you appear to believe the two horns are pretty much the same--you are correct. The ex has the new neck series, some mechanical changes, and a few playability improvements. I am a bit confused with Yamaha on this one. Yamaha stated on its homepage that the EX series would be available with and without a high g key starting back in June 2006. As of yet, I have not seen the one with the high g key.