The Dell Streak 7 is going to be 159.99 online from Best Buy for Black Friday (and probably through the xmas season off and on) and I really need to know some things before trying to get two of them. I mainly intend to use the Streak as a communication (AAC) device for my autistic sons. Most of the APPS for what I am trying to do use smallish mostly cartoon-like (but sometimes real pics of things) icons that turn a touch choice into speech. Screen resolution does not have to be the greatest but don't want fuzzy either. Reaction to touch is important (don't want something that one touch does a bunch of repeating or selects the wrong thing). Sound is important as the whole purpose is for them to communicate with others. Durability would be great but is not in my top requirements as no device my boys have had has been autism-proof. I'm looking for functional, inexpensive, and replaceable. I tried a really cheap Sylvania but it didn't do so well on touch screen and sound. I like the 7" screen size compared to my Vizio VTAB 8" (an inch really makes a difference on holding comfort and portability). So what say you Streak users? I thank you for any insight you can give me.