I have an 86 and i am considering the getting the 92, could comeone tell me the major differences in the 92 and the 86 besides the 3-d graphing. I tried it out in the store but it seems pretty hard to mess with, but i dont know which is better. Is it hard to work with, or is it easier than the 86. Please help. Sean Lovelace zzloves1@lincolnu.edu