Hi I just signed up to this forum to ask this one question. Should I wait for the SP4 or go with the SP3. Ill be using it for work and possibly going back to school. Theres a few things I read on here that may seem like I should wait for the 4 like a pen that can be placed in the tablet and possibly a keyboard bundled with the 4th... I also read that I5's and I7's dont mean anything different and just wanted to know if someone can explain why an I5 is better at times than the I7's? (Thats what it sounded like from one of the threads I read here) Thank you to whoever can help me out.