Hi,

I already have a 48GX and the new 49g+ but I'm wondering if someone could recommend the best HP model that has...

* RPN (don't want to go algebraic);

* scientific functions (mostly trig, log, and inverse functions, units and matrices would be nice too); and is

* non-programmable.

A multi-line display (at least two lines) would be nice too.

I need such a calculator as a requirement for certain exams and as a backup at times when a proctor might be sceptical. I'm planning ahead for January '04, so whether it is an old model that I might be able to find on eBay or something new on the horizon, any recommendation would be great.

Another general question is whether all HP scientific calculators have RPN? I thought RPN was pretty much standard for HP but when I've viewed calculator descriptions recently on the HP web I see algebraic mentioned but not RPN.

Sorry if these sound like dumb questions but having a 48GX workhorse, I haven't been in the market for a new calculator for over 10 years.

Thanks in advance!