Share 'Interwrite Schoolpad or ?'

I am looking to get some sort of tablet/ pad for use during instruction and student use, not a tablet PC I am planning on using in conjunction with a Smartboard or Wii board. I saw a number of them at PowerUp at Oakland Schools a couple of weeks ago but they have kind of blended together. I am looking an Interwrite Schoolpad, does anyone have any of suggestions from firsthand use? I have grant m…