I'm sorry that I have to disagree with an obviously happy TI-92 user, but... If you are going to buy an 86, get it. The 92 may be better, but it is not allowed for use on any standardized tests. The 92 is banned from: SAT, SATII, PSAT, ACT, AP Tests, and almost every Math class in America. James Yopp James D. Yopp, Jr. jyopp@pobox.com "Time is the fire in which we burn."