I am debating between a prizm and an 89 titanium. Tell me everything you know about them I know that 89 basic is pretty nice, but the pure awesomeness of a color calc may beat it out. I want to have good math capabilities (CAS?), but also be able to code good stuff oncalc.

I think an 89 is probably most useful, but I really like the prizm too. Can anyone tell me about prizm basic?

Not yet Jonius. It might take a while before one arrives actually.

mrmprog It's kinda nice, but drawing commands are very slow. You have cool chars to use on the home screen, though.

Well, if you need a CAS, the Prizm won't do the job, so the 89T is the only choice
It has good on-calc programming, not just in TI-BASIC:
* there's NewProg, and several other implementations of high-level languages faster than TI-BASIC;
* there's also C and 68000 ASM, with GTC, but of course, for pure on-calc programming, you'd be missing out the wide GCC4TI documentation, which doesn't fit on the calculator (or at least, would take such a heavy toll on free space).

Well:

TI-89:
160x100 B&W screen
Has CAS
Supports: BASIC, C, ASM, Newprog
BASIC is pretty fast and has a lot of options
2.7 MB Flash, 256 KB RAM USB
Large program library, not really updated by TI anymore.
Must use linking software to send files.

Prizm
Has 384×216 back lit Color Display with over 65,000 colors
No CAS
Supports: BASIC, C, ASM
BASIC is similar to older Casio models, but drawing commands are slow.
USB 2.0 port, 16 MB of flash memory
Smaller program library, newer, updated by Casio.
Recognized as mass storage device by PC.

I was reffering to the Titanium, since that was what he was asking about. You are correct though. My regular TI-89 has much less than that, but a better display.

Hardware