If I'm wanting to add more condition or muscle to one, I focus on quality amino acids first. Maybe try feeding the recommended amount of the Ultium and possibly upping your alfalfa, that may do the trick? Both DAC & OHS are decent omega products. I'd say you can't really go wrong with either one. I'm slowly transitioning my horse off grain completely so I've added in an amino acid supplement called HoofRX by CEP. I've not been disappointed in these products.. small serving sizes and zero fillers. So far so good. 

Thank you so much for the input!

That is why I started to look at the DAC bloom, it has amino acids and more fat (Cool Calories). She is currently getting 4 flakes of Alfalfa throughout the day.  

I took a look into both of the CEP products you recommended to me. The HoofRX seems to be more of a hoof supplement, but I could be wrong. I also took a look into the Vitality and the Vitality plus. However, I'm not sure how I would feel about ordering liquid supplements online. I am really liking CEP prices though. The price/servings ratio seems really good.