I just bought a Dr. Cook Bitless Bridle after reading a lot of threads on this board. Some people didn't like this type of bridle because their horses didn't respond well, but other people loved them. In the end, the main factor for me is the fact that I can return it within 30 days for a full refund if it doesn't work out. Considering the fact that my local tack store doesn't carry any bitless bridles, I have only the internet to look at them, so being able to try one out and return it if necessary was important to me. I haven't tried it yet, but I plan on doing so today, hopefully!