Scientifically Oriented PDAs?

Froze asks: "This is the beginning of my seventh year in school (yes, I am a grad student) and I am looking for the most cost effective solution in a scientifically oriented PDA. A strong compatibility with Linux is a must. My background is in Physics and Mathematics, so it would be nice to have some way of handling mathematical input (like the Zaurus). An on-board language would be a plus as well, something along the lines of bash, Perl, or Java would do."

"I have looked at some of the Linux PDA's out there like Sharps Zaurus and Agenda's VR3 (which is discontinued, I think) and generally liked what I saw. Ultimately, I would like to have the following features:

• Software that can handle math input
• The ability to compile code for it
• An attachable keyboard (close to full size)
• Full Linux compatibility
• Vibrating alarm (things that beep annoy me)
• Pricing that a student can afford

Not all of these are a must. I figured that Slashdot would be the perfect place to ask, with its compliment of intellectual types (yes, I know flattery will get me nowhere *grin!*)."