I've used TS, another small Illinois chain (Farm and Home) across the road from them, a closer mom and pop feed store and others.
Farm and Home is a little lower priced for many of the same products. What is good about both of them, at least the stores by me, is that they tend to take steps to move older product.
As 
@FrostRanger said, there isn't a great deal of difference in brands if you are only keeping birds for egg production.
However, if you are going to be breeding and hatching eggs, that is where the rubber meets the road. All chicken feeds (provided they are fresh) are adequate for egg production. In order to have the nutrition necessary for robust embryos and chicks, it requires a higher level of nutrition, especially amino acids, fat-soluble vitamins and minerals. There are only a certain number of nutrients required to be listed on the guaranteed analysis tag depending on the species being fed.
I find that manufacturers listing more than the minimum nutrients are proud of the fact they are providing more than other companies.
I will elaborate if you ask but, in lieu of that, make sure the feed is fresh. Minerals and some vitamins last a while, but some vitamins and amino acids can deteriorate as feed ages. The mill date will always be on the bag.