I've never heard of the Ultimate draw reins, only normal draw reins, and personally I cannot stand them! My dressage instructor says that she thinks my horse used be ridden in draw reins when she was in the Netherlands, that is why the muscles in her neck are so over-developed.
When is comes to getting a horse "on the bit" it's not all about the head going down, you need the impulsion from behind, you need the horses hindquarters to come underneath him and push him forward, so his back becomes rounded and he holds his neck and head in a good frame. The draw reins just pull the head down so the horse looks like he is in an outline, but because it just focuses on the front end, it causes the horse to fall on the forehand.
Personally, I can't stand them, but that's just my opinion :)
ETA: have you got a trainer? If not, it sounds like it would help you alot if you had one, because draw reins will just cover the problem up, whereas a trainer will help you overcome it :)