i just got a sony clie as a first year. it is a 16MB palm and i'll be getting a memory card to add on software when third year comes. i'm not too worried about it being out-dated when clerkships roll around (which is only 16 months away). i mean, the thing has lots of memory, is color, and ucsf has a cd floating around that has every palm medical software you could think of floating around somewhere.
our curriculum has us running all over the place with multiple small groups, clinical groups, pbl, etc..and they have an online schedule that is downloadable to palms. i also got taber's medical dictionary for the palm and that is really helpful when you are studying away from your desk. lots of people use epocrates in small group and pbl as well to get quick info on pharm. i like it for having my schedule downloaded alone. it is so annoying to have to go online all the time to see what room your small group, your lecture, etc is. i think it really depends on the student.