Which calculator do you recommend and why?

Go to the pereview.net home page and click on the tab “STORE” on the top of the page.  It will take you to a set of materials useful for the PE exam.  Click on “Permissible Calculators” (on the left under ‘powered by Amazon’).  You’ll see all of the permissible calculators.  We like the HP calculators the best because of their ‘feel’.  They are the most robust calculators on the market.  The best one is the HP 33S which can be pre-programmed to a limited but permissible level.