The B17 seems to be a popular choice by people who ride upright. The saddle that I have pictured above is a B17 clone and I like it riding upright. That saddle was also well used before I bought it and I still find it very comfortable. The leather can dry out over time which may be the case with yours, it all depends on how the previous owner treated it.

This saddle should be a great affordable introduction to leather saddles. You will find that not all people like them so it is a very personal choice.