Texas Instruments Voyage 200

this thing is supposed to be the top of the line product for texas instrument and to some all calculator manufacturers but i found the keyboard to be a rather annowing layout with only one delete button located on the regular keyboard, which i never really use, this thing is designed to use both keyboards simultaneously which is a rather difficult endeaver considering the layout, the keypad needs to operate completely seperately from the qwerty keyboard such as there needs to be two delete buttons, two second buttons, and a variable key for entering simpler equations into the graphing functions. The ti-89 is deffinately a more productive device with the somewhat classic keyboard layout and just as much functionality in the programs department. Did i mention the ti-89 is significantly cheaper? the best device to go with is the ti-89, its cheaper, does the exact same thing, and doesn't waste keyboard space. sorry about the lengthy review but when i was looking i couldn't find any reviews comparing the ti-89 and the voyage. So here it is in a nutshell the ti-89 does everything the voyage does in a more ergonomical format, limiting you only to having to push 2nd alpha before typing alphebetical values.