WHY IT'S DESIRABLE: Following a one-year absence from Suzuki's model line, the GS500 returned in 2004 carrying an "F" designation. This second coming of Suzuki's affordable entry-level naked introduced a GSX-R-inspired full fairing featuring a stacked headlamp front and center. What hadn't changed were the light and agile GS's user-friendly nature and confidence-bolstering 31-inch seat height. Here's what we wrote at the time: "Consider the GS500F's 5.3-gallon fuel tank and fuel-efficient engine, its comfortable ergonomics, supple suspension, and functional wind protection. What Suzuki has done is transform a city dweller into what may be the most economical sport-touring mount you can buy."