I've seen this discussed many times -- "Spiegelau makes a sturdier glass."
Now that I've received and used Spiegelau's (Vino Grande collection), I don't see them as any more brake resistant than my Riedel (Vinum). To the eye the Riedels do appear to be more elegant however. And to the touch I think they are as well: The weight seems to be distributed differently, possibly more evenly?
When discussing Spiegelau v Riedel, which collection of Spiegelau do you find to be sturdy, or more sturdy than Riedel? Or which collection of Reidel do you all find so delicate?