I have the 19 Pan, the 13 Nagler and the 24 Pan - and little else.
Both the 19 and the 24 are exceptional EPs.
If you are using an FL of over say, 800mm, (A dob or SCT) I'd probably go the 24.
If using a short FL refractor (f5-f7) the 19 Pan will give that little extra mag.
Can't really go wrong with either.
