I find my self reaching for this pan more than any other pot/pan in the cabinet.  Its heavy duty, it boils water fast, it takes abuse.  The 2 quart works perfect with the All Clad double boiler.  I may use this saucepan every time I cook.  
I think this was the first expensive piece of cookware that I bought.  Of all the other more important pans that I'm still waiting to get I don't know what I'd do if I didn't have this one already.