What do you like best?
Beside being a free tool, it is very helpful to write and edit formulas in my way and then import them to the text documents or spread sheets. I use Math to write formula to make them more readable and clear to understand.
What do you dislike?
It is not smart enough to detect the errors in case of complex formula. Its user interface is not so great likely because they are more attentive to the functionality.
Recommendations to others considering the product:
I highly recommend my friends and colleagues to use Apache's OpenOffice Math for writing formula / equation and handling formula / equation in Calc or Writer.
What problems are you solving with the product? What benefits have you realized?
I use it with Writer and Calc to treat the equation / formula as an object within the document or spreadsheet. It helps me to write equation / formula in detailed manner.