I bought one of the Tuff Sheds as well. Installation went well and after 7 years I am still very pleased. I had them do full installation with the exception of painting which I did myself.
Can't speak of any of the other wood sheds, but the Tuff Shed is very well built and much, much nicer than any of the many metal sheds that I have owned over the years.
Suggestion - unless you plan to run electricity to the shed, get the optional skylight. Really helps to see inside the shed during he daytime.