I'm looking to buy my sister a PDA for her birthday. It's in March, so I have plenty of time, but I have no clue about these things. So anyone got any advise? My max spending is $200. Ouch, it hurt to type that, I'm a miser. What's a good amount of memory to have? Are the color displays on the low-end models any good? (in Dr. Evil voice)I need the info. Thanks for answering!