To start, I am some what of a calculator aficionado, I have the Sharp EL-W516T, Casio fx-991EX, and TI-36X Pro in my quest to find the "just right" calculator.
Advantages of the Sharp over the Casio and TI:
Easiest number system conversion e.g. hex->dec, dec->bin, etc
Has a basic arithmetic drills
No known bugs in the programming (at least as of writing this review)
Custom shortcut buttons
Home button to instantly bring back "Normal Mode"
Unnecessary, but fun random number functions (Dice, Coin Flip)
Best "Remainder Division" output shows quotient and remainder
Most functions: 640 (maybe the TI has same/more, can't find a total function count for TI-36X Pro)
Advantages shared with either the Casio or TI:
History retained after power cycling (TI)
Looks as advertised (no photoshop to make it look better)(Casio)
Faster integrals (same speed as Casio, faster than Ti)
Up to 4x4 matrices
Cheapest construction quality.
Limited to 3 simultaneous equations and 3rd degree polynomials
Disadvantages shared with Casio or TI:
Awful matrix and vector input schemas (maybe I'm spoiled by Ti, you get used to it though)(Casio)
Calculation history is lost when "switching" modes (Casio)
Generic low-resolution-4-line display (TI)
Those are the advantages/disadvantages that I've observed through use. Despite the cheapness of construction, this is my go-to calculator because I like the display formatting, bug free experience (TI has a weird display bug when working with PI and fractions), and general usership (for the most part).
Seems like this model should be permitted on the FE exams. Maybe Sharp did not get this model in to the reviewers for, well, review to see if it's permissible. For that I'd recommend the TI over the Casio as the TI has superior calculation history/answer management.
Most reviews for this calculator appear to be shill reviews, so please click "Helpful" if you find my review helpful.