Most 10% feed are a sweet feed REGARDLESS of their form... a sweet feed can and many times IS a pellet!!
A ration balancer like I use is a vitamin/mineral supplement on steriods...
Which I would reccomend depends on where you live, what type of hay you are feeding, what type of work you horse is NORMALLLY in?? I can recommend all day but if you cant' get product or it is for the wrong type of hay it will do no good.
Is your horse a hard or easy keeeper?? Pictures??
I have been called the NSC Nazi more then once ... I hate traditional feed methods of loading our horses up on grains and junk food :)