Peter Galbert, chair maker, has come up with a new shave horse design, I have just made one and I am very impressed with it. One of my main problems with these tools is the time it takes to change the height of the head so that I can use smaller or larger billets of wood. In the past if I was shaving a largish bit of wood and then needed to do small spindles then my legs would be at full stretch. With the Smarthead horse, as Peter calls it, I just need to pull the head forward and click it into a new position on the internal ratchet. Moving it backwards to have a greater mouth opening is just as easy.
The other great thing about this design is that it may be able to be retro fitted to your existing horse.
The Smarthead horse is fun and satisfying to make and suits my style of working perfectly.