We had the opportunity to try the Ansur saddle on several Icelandic Horses, as well as some other breeds. It's a very nice looking saddle. It may be on the expensive side.
The saddle definitely needs a pad with a channel (maybe a Skito) to keep the saddle from laying directly on the withers.
In the first picture below, you can see the pommel and then the underlayer which lays directly on the horse.