I guess you can PM me, but why not just post questions here?
I have fed Purina Strategy (GX) for several years now.
I like that it stores well (VERY rarely have had a spoiled bag) is very palatable and can be fed to a wide range of age and class of horses, as I usually have all types around (brood mares, weanlings, yearlings, mature performance horses, breeding stallions, etc.)
I find that it does make horses "hot" and gives them a TON of energy. AND they don't get fat/ put on weight from it either, so it helps to keep them slim with a lot of energy but you have to use it to build muscle, it won't put on any fat. I usually supplement with rice bran and/or corn oil to use as a fat source.
I fed my minis anywhere from 1/2 to 2 pounds of it per day, depending on the horses' work loads. My shetlands get 1-3 pounds of it during show season, and only 1/2 pound during non show season if i'm not working them regularly (always along with rice bran/corn oil though, so they do get weight on them).
Andrea