Reputation isn't everything, and staffs and keele aren't too far apart for psychology, not sure about English. However I read somewhere that staffs is one of the most improved unis, not sure if its true but makes me think that maybe its reputation will improve in the next 3 years, especially for me because of the new science centre.
Tbh, if you were happy at keeles open day, you have nothing to worry about and you made the right choice. Best to focus on where you think you'll be happy most rather than reputation etc. Remember, if you aren't happy there you will be less likely to get a good degree, which is what counts the most