Good but heavy
I ride a PR1 on my road bike and a PR2 on my mountain bike so I thought I would try the PR3 for extra comfort. I am around 107 kilos and 1.76 metres tall but me for this saddle is too wide. The build quality is very good and if you suffer from bum pain the ISM saddles definitely work. Some would argue at the expense of a little sit bone discomfort but for me it is a price worth paying.
Pros: Comfortable, Durable, Rugged
Cons: Expensive