We started with ecclesiastical, as from what I read, it was a bit easier for the younger ones to learn. Colleges use classical, I believe (generally), but I’ve read, over and over in my research, that it is not too challenging to switch later if that ends up being necessary. Ecclesiastical also lends itself better to opera, which is of some interest to us. I don’t think it matters terribly, to be honest, yet that didn’t stop me from agonizing over the decision, lol.
Take care,
Rachel