I use Mac OS X for 99.5% of my uses: I have Mac Office X, Quake 3 Arena (OS X vesion), VueScan X for scanning, AOL IM, Mozilla for cruising the web, BBEdit Lite for OS X for serious text editing, and X48 (Hewlett Packard 48GX calculator emulator). The ONLY reason I ever use classic is for chemistry drawing programs. One is not available for OS X, and the other and much better one is, but costs too much to upgrade. CambridgeSoft wants FULL PRICE for a 6 --> 7 upgrade. NO WAY! I don't have $500 (educational discount) laying around.