Apple Computer Inc may not have had a hot seller with its Macintosh laptop, but a survey of 220 US corporate users by Datamation found that those that had the thing were more happy with it than were the users of any other laptop or notebook computer: Apple scored 8.1 out of 10, Compaq Computer Corp got 8.0, IBM Corp, 7.8, Dell Computer Corp, 7.6, Toshiba Corp only 7.4, Zenith Data Systems a lowly 6.9.