It depends on what specific Kaytee food product you're talking about. If you look at and compare the ingredients in a lot of Kaytee's Parakeet/Budgie seed and pellet mixes, as well as a few of their Forti-Diet seed-mixes for Cockatiels, Conures, etc. that are sunflower-seed free, they have pretty much exactly the same ingredients and nutritional values as any of the other, more expensive brands, such as Zupreem, Higgins, Vita Prima, SunSeed, etc. And their baby bird formula, both the regular and the high-fat formula is again very comparable to that of Roudybush and the other common brands.
The problem with Kaytee comes when you look at their pellets, as they don't manufacture anything but "Fruit" pellets, they don't make any Natural pellets, and as such their pellets are full of sugar and not good at all. In addition, they sell a lot of really cheap seed-mixes that not only contain sunflower seeds and millet, but that's pretty much all they are, and their fat content is through the rood, and the protein, vitamin, mineral, etc. content is just crappy. So it's all about which Kaytee product that you're talking about, because again, they make a few really wonderful and healthy Budgie seed-mixes, specifically their Budgie Forti-Diet that is sunflower seed free, as well as their sunflower seed-free Egg-Food FortiDiet, which I have actually been using for years with my breeder Budgies, as it not only contains a healthy seed mix, but also contains a quality Egg-Food for the breeders, along with added probiotics and digestive enzymes.
So bottom-line is you have to look at each individual Kaytee product, read the ingredients and the nutritional values/content percentages, and then compare to the other brands. Some are great and completely comparable, some are not good at all. And they make a HUGE number of different seed mixes, so you have to look at each one individually.
