2" or 1 1/4' Diagonal ?

I have been contemplating purchasing an enhanced mirror diagonal. I probably will not have a large collection of 2" EPs. Would there be any advantage of having a 2" diag vs. a 1 1/4" if my primary EPs are 1 1/4?
Thanks for your opinions.
Tim

2" is much nicer, gives you more to work with. john