I've been to 5 bike shops in the past few days and it seems they all sell Serfas and have a very limited selection of one or two other brands, none of which I'm interested in.
I currently own a Serfas (like this)

and am looking for something new.

Anyone have any experience with any of the following? Please remember that I'm 57, not your typical young, slim, European-looking rider. Just an old, average, Southerner. I don't race. I just want something for long rides (25-45 miles) and the occasional century or metric.

Here is what I've been looking at on Nashbar's and Performance's websites.

Gipiemme Nitrec Gel Saddle
Selle Italia Oktavia Gel
Selle Italia Max Flight Trans Am
Selle Italia Flite Gel Saddle

FYI: I've also tried Terry Liberator, Specialized Body Geometry, and Fizik.

Thanks for your opinions on these or recommendations for other brands for my Litespeed road bike.