I have a Giant Innova hybrid with shock post - the original saddle was very uncomfortable. And yes, I had the burning, etc. after my first 15 mile ride. We went back to our bike shop and each purchased a Rav-X gel cutout unisex seat (The women’s model was too narrow for me). It is very comfortable and my husband, who wasn’t having any issues with his old seat, said it was better and he did not even realize how uncomfortable his old seat was until he switched. I have not ridden in cycling shorts yet (saving up for them), but I ride with my workout slacks and shirt and have not had any more issues with saddle sores/burning.