I chose the rice bran route (from Triple Crown), feed a small margarine 
container (about 8 oz) once per day and have seen a dramatic improvement 
in Kasey's overall appearance.  This includes putting on weight in the 
"difficult" spots, over the back, in the loins, etc.  His hair coat 
"blooms", his spirits are high without him being "high" and he loves the 
taste.  I'm so impressed with the results that I have started our other 
two on this same feeding regimen.
Mr T just came through a very tough Blue Mountain Gallop 50 with energy 
to spare.  He looks great this morning, not tucked up, no abnormal weight 
loss.  This is a 17 year old who started to look ribby as the winter 
ended.  In addition to the rice bran, I also have included a 1 lb can of 
Equine Senior for him.  This has made a marked difference in his 
appearance and energy level (much to Kevin's chagrin!).
I very much value the research being done on equine nutrition and find 
that it helps me make more informed choices on behalf of our hard-working 
friends.
Diane @ Safe Haven