Help me choose next calculator

[dockthedog]

Marcio: I actually bought a HP35 some years ago to replace my original HP48 (I've had two) and would have kept it if it had better capability handling units. The 48GX has many, many, units pre-programmed and converting between them is very easy. I'm a mechanical engineer and I have to convert units a lot!

rprosperi: I don't know the difference between RPN or RPL. In any event I'm familiar with what the HP48GX uses. I'm intreagued by the WP34S. Any idea on it ability to handle units?