Mailarchives (A89: difference between hw1 and hw2)

Hey, i got my 89 when it first came out. back in the day. thus its a hw1... for the past few months i have been away and havent even been to ticalc or any ti related site. i came back a few days ago (now a regular) and noticed something about hw2. i know enough to know that everyone is complaining about this. ive been looking for info, but to no avail. i just want to know a bit about the differences, why everyone hates hw2, if i should upgrade my calc, etc... i just dont know much about this and would like to get to know some more :)