Sorry to butt in like this, but it always amazes me when someone posts a question like "Flugelhorn: Bach Stradivarius VS Yamaha?" to get answers like:
Eclipse
Conn V 1
Hub Van Laar
etc
Now, I have to admit that at the END of my post, I said that I played a Kanstul, but they guy specifically asked about two specific brands. I understand that you like your Eclipses and Conns and whatever it is that you happen to currently own and play, but how about some dialog regarding the two that he asked about?
That would be like someone asking
Q: "Coffee or tea?"
A: "Milk!"
Again, for my money, the Yamaha is the better choice.