Hello BTRBComposer, and congrats for pulling the trigger on Sinfonico!
What is the ETA on your unit? If the wessex site is correct, Sinfonico is in stock, so your wait should not be too long.
My Wessex Festivo came with the standard 4Y mouthpiece.... An MP with a Slightly dry tone, and was not my favorite... It is my understanding that Sinfonico might ship with the same. At some point I adopted the Wick 4AL, which much prefer it over Wessex 4Y.... But -- oh so recently -- I have been much intrigued by the results of Dave Werden's comparative experimentation with the Alliance DC3 versus his 4AL, thus there might be a DC3 or DC4 somewhere in my future.
I hope you will post a youtube demo of your upcoming Sinfonico!
Regards, Guido
M5050L - DC2&3, SM2&4U, BT16, Carbonaria Heavy & New
Wessex EP104 Festivo - available
Carolbrass CCR7772 Bb cornet - Available