Customer Rating: 



Summary: Excellent!
Comment: I am planning for CFA exam and the HP calculator is really easy to learn and i found it very useful in my daily investment activities.
Customer Rating: 



Summary: Good, but...
Comment: [This comment refers to the 25th anniversary edition]
There are, at the time of this writing, 101 reviews of this calculator so I won't go through another detailed one. And I do recommend this HP with one caveat. This calculator is solidly built except for the LCD screen. The LCD, which is not the best I seen, is covered with a soft, flexible plastic which if pressure is applied could damage the the LCD. Also be warned that this plastic film is very easily scratched and marred, even while in the vinyl case. I recommend the use of a film protector similar to those used on PDAs and perhaps a better, sturdier case. HP got really cheap here.
Customer Rating: 



Summary: One calculator to rule them all
Comment: I bought this 25th Anniversary Edition HP-12C for my economics papers at Uni. Has been one of the best purchases I have made and I could only recommend this whole heartily to anyone in the field.
I have found the build quality to be excellent and the prodigious 250 page manual informative to pick through. It does leads me to wonder why Reverse Polish Notation calculators are not more widely used by the public at large. Regardless, this is one device worth holding onto.
Customer Rating: 



Summary: HP 12C
Comment: This is the third version that I have bought, the first one being in 1984. This item must be HP's all-time best seller in terms of units sold.
Customer Rating: 



Summary: Advanced
Comment: This calculator is very advanced, it has more functions than I know what to do with. The 12c calculator is smaller and has more features than the BA-II. It also comes with a cool carrying case.