You can go to Seybert's, etc, and look for yourself. The standard - which is what I have, & it works great - is one piece. The Elite is modular, including connecting screws (which could be a source of trouble), and the top model includes Allison Fisher's name.
The description makes no comment as to the superiority of one over the other.
Bottom line is this... The basic model works as well as one can work, unless you intend to add excavation or concrete flat work to the duty roster...