There’s 2 brand/models I’ve really enjoyed the last few years of riding. The first one is the Serfas TGU-1 Tegu Titanium from 2010.Though this particular model has been discontinued, Serfas does offer other current year models of the Tegu priced around $55.
The next choice is the WTB Speed V. This model is readily available through most online retails and the average price hovers around $30.
I highly recommend each brand/model due to the fact they are super comfy. But don’t worry they aren’t too wide where you can’t get a full leg extension. Oh by the way, both saddles are 29er compatible!