Diopter sights

After going through many types of air rifles and scopes I find myself most comfortable with Diana 48’s and 54’s with iron sights. Iron sights meaning Williams rear and Diana korn tunnel globe front.
My shooting is done 95% at a range, with distances from 25 to 100 yards. Now my question is, are there other options open to me besides the William brand?

Mitch
 
I really like Williams on my Diana 52 too. If you are interested in a notched rear sight, buy the one used in Feinwerkbau Sport. I just got this rifle and the sight is the best notched sight I've seen.

For one of my Williams sights I bought a adjustable aperature to fit it. It's nice to play around with. High end 10 meter sights are expensive and can't take bumps like a Williams can. Don't fix what is not broken. Williams sells a "twilight" aperature that is large. If you don't have one, give it a try.