WITH the dazzling choice facing businessmen, selection of an airline often comes down to the little things, like inflight entertainment, food or service. At Thai Airways International, the management hopes the recent prestigious international award it won for the best wine served to first-class passengers, will attract a few connoisseurs. Thai has always had a reputation for the excellence of its food, and it caters for several leading airlines. Therefore, the award for its wine perfectly rounds off the meal. For the record, the wines to look forward to on first-class flights are, for reds: Gevrey Chambertin 1989; Chateau Batailley 1982; Chambolle-Musigny Premier Cru 1989; and Chateau Prieure Lichine 1987.