Fair comparisons will be drawn between the RS21 and the J/70 and Melges 20, but these two are slightly more substantial boats in a few different ways. The RS21 weighs a stated 1,433 pounds, roughly 300 pounds lighter than the J/70 and 200 heavier than the Melges 20, which is obvious given there's no cabin top or interior whatsoever. As an open-deck boat that's lower to the water, the RS21 will feel more like a dinghy, especially when waves and chop breaking over the bow come sluicing through the cockpit. The RS21's sailplan (265 sq. ft. upwind/606 sq. ft. downwind) doesn't have as much horsepower as the Melges 20, but it's pretty darn close to the J/70. When you start talking about the cost to get to the racecourse, however, that's where the divide grows, and that's where sailing clubs looking to replace aging fleets will be most hawkish.