There is a thread very similar to this but I'll post anyway..
I love the Classic Equine ESP pads..I have a few and haven't ever had any problems with them. I also like the Classic Equine BioFit, Impact Gel, Best Ever pads.. The ESP are just my favorite, I have the coutoured memory foam with a felt bottom. Great pad!
I love Classic Equine ESP pads and Impact Gels but recently realized we had a Judy Myllymaki 5 Star so I have tried that for the last month and really like it on both of my horses. I was a skeptic when it came to the 5 Stars but I think I am going to eat my words lol....
When I had my barrel saddle I used a Charmayne James SMx Air Ride Barrel Pad. Worked pretty good for me and the horses. Sold my barrel saddle and a shaped pad doesnt work with my current saddle so I sold it. The new owner is happy with it too.