Hi, i've been pondering about buying tx2500z, and they cost around $1200. For tx2000z, i can save $200. Is there a lot of difference between these two? I understand that processors and graphics card is the only difference; so i'm guessing there's no difference in recognizing handwritten texts between these two models? I'm planning to use tablet pc just for taking down and organizing notes, and also for web surfing and occasional gaming- like starcraft.; or maybe even starcraft 2 when it comes out. Oh, and is the heat really a major problem in tx2000z?