Maybe hp's calculator return on investment would be greater if aimed towards a different target, at least at a different marketing vision. It may be easier to measure the educational market than the population of people generally aligned with engineering applications. While this may not be generally true, the idea that the Prime was targeted at the educational market, maybe missed the reality target?Д¬ould it be there are more engineer types than students in the pot of Prime purchasers? (I'm also more in an engineering camp, with background in field telemetry and electronic / electrical systems for the last 50 years). Looking over the list of responses (so far), it looks like there could be a greater number of engineers, than students, who have purchased the Prime. But if you have the time and motivation to play with it, are willing to accept workarounds to achieve your goal and if gathering information in the internet is ok for you, it could be an option nonetheless. I almost never use it at work by now which is why I would propably not buy it again. No I really can't understand why certain aspects were not noticed by HP or were ignored prior to launch.ДЄs far as I know HP does not give insights into their roadmap and what can be expected in the future. I have the prime and it is really fun playing with it, but the documentation is very poor (it is true: you depend on the internet) and still I find many things annoying and can't comprehend why they were designed the way they are. Sad but true.ДЄlthough HP might change their orientation in the future and offer the whole package wich includes the scientific and engineering people, that is not at all sure. Owning the HP35 shows that you are one of those rare HP/RPN likers which are not what the prime is supposed to serve. HP does and will focus primarily on selling numbers in the education market. Keep in mind what was often stated here: 'you are not targeted by the prime!'. I wouldn't be surprised if after buying a Prime, you'd stick on your 35s. The 15C LE has a very good keyboard and most common scientific features but the 34S is a total engineer spoil, doped like a tour de france cyclist but unfortunately the keyboard is not as good as others. I have a 15C (LE), a Prime and recently a 34S.ДЇor engineering, I would says the prime is the worst choice the only advantage of the Prime is a blazing speed but I don't think this would be the right tool for engineering. I am confused, that RPN is possible only in home mode on the Prime. There is very small choise of graphic RPN calculators. I really like it (RPN), but now I am looking for graphic calculator. (03-18-2014 09:41 PM)Voldemar Wrote: Thank You for fast answer.

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