For those who want to bring a more deliberative method to choosing restaurants before they hit the road, several Internet sites bear mentioning. One is Digital City (www.digitalcity.com), a free service of AOL. Like its competitor, CitySearch (www.citysearch.com), Digital City is a guide to local information about scores of cities across the country, and offers extensive restaurant listings and descriptions. Like the best restaurant-oriented Web sites, Digital City lets you narrow your search by cuisine. Unfortunately, like most other such sites, it does not allow you to winnow your choice by price. But once you've chosen a promising candidate, you can often find a professionally written review. According to Jim Riesenbach, Digital City's general manager, those reviews come courtesy of the Gayot restaurant guides, which cover about 17,000 establishments on the site. ..."