First off, welcome to SBG! You'll typically find some of the nicest people on the internet around here.
For your question: I've used the thayers, dickinsons, walmart store brand, publix store brand, and Wynn dixie store brand. In terms of efficacy I found no difference (even with the more expensive thayers alcohol free). There was one gogantic difference though... The cost! Now I just use the store brand. Same crap, same soothing results, fraction of the price. At my local walmart, for example, I can get dickinsons for about $5 while the same size bottle of their store brand is $1.25
Now keep in mind my skin benefits highly from alcohol and so forth. If I use moisturizers I get pimples. So for me I can get away with using the cheap witch hazel and use an alcohol based AS after that. If your skin is very sensitive to alcohol then you may want to consider trying the thayers alcohol free. It's the same stuff except cheaper witch hazel is typically 86% WH cut with 14% ISO alcohol.