On the other hand, the Nspire interface feels a bit more familiar with Windows. If they allowed a mouse to be used with the calc it would actually be very awesome.

However as it is now, the touchpad is barely responsive and was poorly implemented. I mean Doors CS on the 83+ uses a similar system with selecting stuff with the mouse cursor, but at least the mouse is responsive. Granted, both things got keypad shortcuts, but still...
Also I hate how high they charge for their calcs outside United States and France. Here a TI-Nspire CX, not even the CAS, costs $194.99! I saw the PRIZM and the 83+ for $99.99 a few times and normally the PRIZM is $149.99, the same price as their monochrome 84+.