The "x" on the Infiniti G35 means that it is all wheel drive as opposed to rear wheel drive. It will be better in the rain and snow with all wheel drive, but it will be slightly slower and won't handle quite as well if driven to the limit on dry roads. (All wheel drive cars are heavier and tend to understeer/push more at their extreme handling limits than rear wheel drive cars do on dry pavement) The "L" on the Accord is just a trim-level designation (the car probably has some feature or equipment group not available in the EX). All newer Accords (at least in the U.S.) are front-wheel drive no matter what model.