In the end it is a matter of what you want out of the eyepiece.
I have an Orion XT8i with 2" focuser.
I wanted a low power wide field eyepiece for those big DSOs like the Pleiades and the Andromeda Galaxy.
Specs on my scope say the minimum mag on my scope is 29X. I am told that if I go below that I am going to see the spyder.
For my 1200 mm FL scope I got a 38 mm 70 degree AFOV eyepiece. That gives me 31.5X and 2.2 degrees actual field of view. That is beautiful and no way I can get that in a 1.25" eyepiece, at leas not one at price I would be willing to pay. I also have a 25 mm 2" 70 degree. And I barlow them at 2X.
http://agenaastro.com/agena-38mm-sup...-eyepiece.html
So look at the specs on your scope and don't go lower than the minimum rated mag.