You pays your money and you takes your choice: Dataquest, the people who brought you the 1981 forecast that IBM would be shipping 350,000 Personal Computers a year by 1985, for annual business of $700m to $800m and 10% of the sub-$5,000 market, reckons that IBM will this year sell 500,000 Personal System/2 Model 30s, 240,000 50s, 98,000 Model 60s, and 115,000 Model 80s.