Yes, it has some serious bugs. The calc will sometimes fail to turn on the screen, making you think the batteries are dead while they're draining away.

The old Nspire CAS+ prototype OS 1.0 can't open documents created by more recent production TI-Nspire OSes.
The TI-Nspire CAS+ prototype OS 1.0 can't exchange data through USB with production TI-Nspire.

If it's a money problem, you can find TI-Nspire CAS ClickPads allmost as cheap as TI-Nspire CAS+.
You'll be able to do much more on them...

Wow! Thanks for the prompt reply, I guess the extra $20 for a CAS Clickpad is really worth it then. Any suggestions on where to get one besides ebay and amazon?

allso, if MP is all you're after, it pains me to say this (the MP oses have many programming-related bugs), but an 84+ with the latest OS has mathprint. 83+s don't though, unless you hack the OS (I think someone did it, but it causes problems)

The 84+ is still around and being updated? Pardon my lack of current knowledge on TI's calculator lineup, but is this because of the 84+ keypad for the regular nspire? I don't really understand why they would keep such an outdated calculator around for so long and still update the OS.

Greetings fellow calculator enthusiasts,

I have a TI-89T for programming and an HP-50g for math, and am considering purchasing a TI-Nspire CAS+ (for $50) for general math. Since you guys are quite knowledgeable about this kind of thing, and some members have a CAS+, I was hoping you could answer a few questions of mine.

What are the differences between the old CAS+ OS and the newer ones on the CAS Touchpad?

Since I am not concerned with always updating the OS on my 89T and 50g, I dont think I will care about being stuck on an old OS on the CAS+. Am I wrong?

Is the hardware any different from the non-prototype CAS Nspires?

The reasons I am considering "upgrading" from my TI-89T are its lack of mathprint, tiny screen (even when compared to the *crappy* screen of the HP-50g), and general slowness compared to the 50g. Will I be disappointed with the CAS+'s "improvements" over the TI-89T?

Thanks for reading