HI there Poss93
Congratulations in actually having a choice in this day and age. You obviously have much to offer being so employable!
I have worked for myself, medium chains and a very large chain. Contrary to what I though, the largest chain was the best thanks largely to my boss who was amazing. So supportive and nourishing - a rare person and great to work with. Obtained lots of bonus things for me once he saw what I could do.
If I may suggest so, go with the position that 'feels right' for you. How will you know this? Ask for another interview and ask tons of questions about your future, training, company philosophy, what you can do for the company and what the company can do for you! Good and not so good aspects of the position etc.
Before that, go to some of their stores and spend time there - what does the vibe feel like? Are you able to meet the peeps you will be working with beforehand? Ask them up front what the company is like to work for, how happy they are etc.
Try not to look only at the money, parking etc as they are rational things that can easily be fixed. Company culture on the other hand is ingrained - the way they treat their staff etc.
I hope this has helped just a little and all the very best with your decision!